What is the severity of CVE-2021-1446?

CVE-2021-1446 has a critical severity rating, as it could allow an unauthenticated remote attacker to cause the affected device to reload.

How do I fix CVE-2021-1446?

To fix CVE-2021-1446, update your Cisco IOS XE software to a version that addresses the vulnerability.

What types of devices are affected by CVE-2021-1446?

CVE-2021-1446 affects Cisco IOS XE devices with specific versions that utilize the DNS ALG functionality in NAT.

Can CVE-2021-1446 be exploited remotely?

Yes, CVE-2021-1446 can be exploited remotely without authentication, making it particularly dangerous.

What are the potential impacts of CVE-2021-1446?

The potential impacts of CVE-2021-1446 include unexpected device reloads, leading to service disruption.

Vulnerability/
CVE-2021-1446

high

8.6

CWE

754

24/3/2021

8/11/2024

CVE-2021-1446: Cisco IOS XE Software DNS NAT Protocol Application Layer Gateway Denial of Service Vulnerability

First published: Wed Mar 24 2021(Updated: )

A vulnerability in the DNS application layer gateway (ALG) functionality used by Network Address Translation (NAT) in Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability is due to a logic error that occurs when an affected device inspects certain DNS packets. An attacker could exploit this vulnerability by sending crafted DNS packets through an affected device that is performing NAT for DNS packets. A successful exploit could allow an attacker to cause the device to reload, resulting in a denial of service (DoS) condition on an affected device. The vulnerability can be exploited only by traffic that is sent through an affected device via IPv4 packets. The vulnerability cannot be exploited via IPv6 traffic.

Credit: ykramarz@cisco.com

Affected Software	Affected Version	How to fix
Cisco IOS XE Software	=3.7.0bs
Cisco IOS XE Software	=3.7.0s
Cisco IOS XE Software	=3.7.0xas
Cisco IOS XE Software	=3.7.0xbs
Cisco IOS XE Software	=3.7.1as
Cisco IOS XE Software	=3.7.1s
Cisco IOS XE Software	=3.7.2s
Cisco IOS XE Software	=3.7.2ts
Cisco IOS XE Software	=3.7.3s
Cisco IOS XE Software	=3.7.4as
Cisco IOS XE Software	=3.7.4s
Cisco IOS XE Software	=3.7.5s
Cisco IOS XE Software	=3.7.6s
Cisco IOS XE Software	=3.7.7s
Cisco IOS XE Software	=3.7.8s
Cisco IOS XE Software	=3.8.0s
Cisco IOS XE Software	=3.8.1s
Cisco IOS XE Software	=3.8.2s
Cisco IOS XE Software	=3.9.0as
Cisco IOS XE Software	=3.9.0s
Cisco IOS XE Software	=3.9.0xas
Cisco IOS XE Software	=3.9.1as
Cisco IOS XE Software	=3.9.1s
Cisco IOS XE Software	=3.9.2s
Cisco IOS XE Software	=3.10.0s
Cisco IOS XE Software	=3.10.1s
Cisco IOS XE Software	=3.10.1xbs
Cisco IOS XE Software	=3.10.1xcs
Cisco IOS XE Software	=3.10.2as
Cisco IOS XE Software	=3.10.2s
Cisco IOS XE Software	=3.10.2ts
Cisco IOS XE Software	=3.10.3s
Cisco IOS XE Software	=3.10.4s
Cisco IOS XE Software	=3.10.5s
Cisco IOS XE Software	=3.10.6s
Cisco IOS XE Software	=3.10.7s
Cisco IOS XE Software	=3.10.8as
Cisco IOS XE Software	=3.10.8s
Cisco IOS XE Software	=3.10.9s
Cisco IOS XE Software	=3.10.10s
Cisco IOS XE Software	=3.11.0s
Cisco IOS XE Software	=3.11.1s
Cisco IOS XE Software	=3.11.2s
Cisco IOS XE Software	=3.11.3s
Cisco IOS XE Software	=3.11.4s
Cisco IOS XE Software	=3.12.0as
Cisco IOS XE Software	=3.12.0s
Cisco IOS XE Software	=3.12.1s
Cisco IOS XE Software	=3.12.2s
Cisco IOS XE Software	=3.12.3s
Cisco IOS XE Software	=3.12.4s
Cisco IOS XE Software	=3.13.0as
Cisco IOS XE Software	=3.13.0s
Cisco IOS XE Software	=3.13.1s
Cisco IOS XE Software	=3.13.2as
Cisco IOS XE Software	=3.13.2s
Cisco IOS XE Software	=3.13.3s
Cisco IOS XE Software	=3.13.4s
Cisco IOS XE Software	=3.13.5as
Cisco IOS XE Software	=3.13.5s
Cisco IOS XE Software	=3.13.6as
Cisco IOS XE Software	=3.13.6bs
Cisco IOS XE Software	=3.13.6s
Cisco IOS XE Software	=3.13.7as
Cisco IOS XE Software	=3.13.7s
Cisco IOS XE Software	=3.13.8s
Cisco IOS XE Software	=3.13.9s
Cisco IOS XE Software	=3.13.10s
Cisco IOS XE Software	=3.14.0s
Cisco IOS XE Software	=3.14.1s
Cisco IOS XE Software	=3.14.2s
Cisco IOS XE Software	=3.14.3s
Cisco IOS XE Software	=3.14.4s
Cisco IOS XE Software	=3.15.0s
Cisco IOS XE Software	=3.15.1cs
Cisco IOS XE Software	=3.15.1s
Cisco IOS XE Software	=3.15.1xbs
Cisco IOS XE Software	=3.15.2s
Cisco IOS XE Software	=3.15.2xbs
Cisco IOS XE Software	=3.15.3s
Cisco IOS XE Software	=3.15.4s
Cisco IOS XE Software	=3.16.0as
Cisco IOS XE Software	=3.16.0bs
Cisco IOS XE Software	=3.16.0cs
Cisco IOS XE Software	=3.16.0s
Cisco IOS XE Software	=3.16.1as
Cisco IOS XE Software	=3.16.1s
Cisco IOS XE Software	=3.16.2as
Cisco IOS XE Software	=3.16.2bs
Cisco IOS XE Software	=3.16.2s
Cisco IOS XE Software	=3.16.3as
Cisco IOS XE Software	=3.16.3s
Cisco IOS XE Software	=3.16.4as
Cisco IOS XE Software	=3.16.4bs
Cisco IOS XE Software	=3.16.4cs
Cisco IOS XE Software	=3.16.4ds
Cisco IOS XE Software	=3.16.4es
Cisco IOS XE Software	=3.16.4gs
Cisco IOS XE Software	=3.16.4s
Cisco IOS XE Software	=3.16.5as
Cisco IOS XE Software	=3.16.5bs
Cisco IOS XE Software	=3.16.5s
Cisco IOS XE Software	=3.16.6bs
Cisco IOS XE Software	=3.16.6s
Cisco IOS XE Software	=3.16.7as
Cisco IOS XE Software	=3.16.7bs
Cisco IOS XE Software	=3.16.7s
Cisco IOS XE Software	=3.16.8s
Cisco IOS XE Software	=3.16.9s
Cisco IOS XE Software	=3.16.10as
Cisco IOS XE Software	=3.16.10s
Cisco IOS XE Software	=3.17.0s
Cisco IOS XE Software	=3.17.1as
Cisco IOS XE Software	=3.17.1s
Cisco IOS XE Software	=3.17.2s
Cisco IOS XE Software	=3.17.3s
Cisco IOS XE Software	=3.17.4s
Cisco IOS XE Software	=3.18.0as
Cisco IOS XE Software	=3.18.0s
Cisco IOS XE Software	=3.18.0sp
Cisco IOS XE Software	=3.18.1asp
Cisco IOS XE Software	=3.18.1bsp
Cisco IOS XE Software	=3.18.1csp
Cisco IOS XE Software	=3.18.1gsp
Cisco IOS XE Software	=3.18.1hsp
Cisco IOS XE Software	=3.18.1isp
Cisco IOS XE Software	=3.18.1s
Cisco IOS XE Software	=3.18.1sp
Cisco IOS XE Software	=3.18.2asp
Cisco IOS XE Software	=3.18.2s
Cisco IOS XE Software	=3.18.2sp
Cisco IOS XE Software	=3.18.3asp
Cisco IOS XE Software	=3.18.3bsp
Cisco IOS XE Software	=3.18.3s
Cisco IOS XE Software	=3.18.3sp
Cisco IOS XE Software	=3.18.4s
Cisco IOS XE Software	=3.18.4sp
Cisco IOS XE Software	=3.18.5sp
Cisco IOS XE Software	=3.18.6sp
Cisco IOS XE Software	=3.18.7sp
Cisco IOS XE Software	=3.18.8asp
Cisco IOS XE Software	=3.18.8sp
Cisco IOS XE Software	=16.1.1
Cisco IOS XE Software	=16.1.2
Cisco IOS XE Software	=16.1.3
Cisco IOS XE Software	=16.2.1
Cisco IOS XE Software	=16.2.2
Cisco IOS XE Software	=16.3.1
Cisco IOS XE Software	=16.3.1a
Cisco IOS XE Software	=16.3.2
Cisco IOS XE Software	=16.3.3
Cisco IOS XE Software	=16.3.4
Cisco IOS XE Software	=16.3.5
Cisco IOS XE Software	=16.3.5b
Cisco IOS XE Software	=16.3.6
Cisco IOS XE Software	=16.3.7
Cisco IOS XE Software	=16.3.8
Cisco IOS XE Software	=16.3.9
Cisco IOS XE Software	=16.3.10
Cisco IOS XE Software	=16.3.11
Cisco IOS XE Software	=16.4.1
Cisco IOS XE Software	=16.4.2
Cisco IOS XE Software	=16.4.3
Cisco IOS XE Software	=16.5.1
Cisco IOS XE Software	=16.5.1a
Cisco IOS XE Software	=16.5.1b
Cisco IOS XE Software	=16.5.2
Cisco IOS XE Software	=16.5.3
Cisco IOS XE Software	=16.6.1
Cisco IOS XE Software	=16.6.2
Cisco IOS XE Software	=16.6.3
Cisco IOS XE Software	=16.6.4
Cisco IOS XE Software	=16.6.4a
Cisco IOS XE Software	=16.6.4s
Cisco IOS XE Software	=16.6.5
Cisco IOS XE Software	=16.6.5a
Cisco IOS XE Software	=16.6.5b
Cisco IOS XE Software	=16.6.6
Cisco IOS XE Software	=16.6.7
Cisco IOS XE Software	=16.6.7a
Cisco IOS XE Software	=16.6.8
Cisco IOS XE Software	=16.7.1
Cisco IOS XE Software	=16.7.1a
Cisco IOS XE Software	=16.7.1b
Cisco IOS XE Software	=16.7.2
Cisco IOS XE Software	=16.7.3
Cisco IOS XE Software	=16.7.4
Cisco IOS XE Software	=16.8.1
Cisco IOS XE Software	=16.8.1a
Cisco IOS XE Software	=16.8.1b
Cisco IOS XE Software	=16.8.1c
Cisco IOS XE Software	=16.8.1d
Cisco IOS XE Software	=16.8.1e
Cisco IOS XE Software	=16.8.1s
Cisco IOS XE Software	=16.8.2
Cisco IOS XE Software	=16.8.3
Cisco IOS XE Software	=16.9.1
Cisco IOS XE Software	=16.9.1a
Cisco IOS XE Software	=16.9.1b
Cisco IOS XE Software	=16.9.1c
Cisco IOS XE Software	=16.9.1d
Cisco IOS XE Software	=16.9.1s
Cisco IOS XE Software	=16.9.2
Cisco IOS XE Software	=16.9.2a
Cisco IOS XE Software	=16.9.2s
Cisco IOS XE Software	=16.9.3
Cisco IOS XE Software	=16.9.3a
Cisco IOS XE Software	=16.9.3h
Cisco IOS XE Software	=16.9.3s
Cisco IOS XE Software	=16.9.4
Cisco IOS XE Software	=16.9.4c
Cisco IOS XE Software	=16.9.5
Cisco IOS XE Software	=16.9.5f
Cisco IOS XE Software	=16.9.6
Cisco IOS XE Software	=16.10.1
Cisco IOS XE Software	=16.10.1a
Cisco IOS XE Software	=16.10.1b
Cisco IOS XE Software	=16.10.1c
Cisco IOS XE Software	=16.10.1d
Cisco IOS XE Software	=16.10.1e
Cisco IOS XE Software	=16.10.1f
Cisco IOS XE Software	=16.10.1g
Cisco IOS XE Software	=16.10.1s
Cisco IOS XE Software	=16.10.2
Cisco IOS XE Software	=16.10.3
Cisco IOS XE Software	=16.11.1
Cisco IOS XE Software	=16.11.1a
Cisco IOS XE Software	=16.11.1b
Cisco IOS XE Software	=16.11.1c
Cisco IOS XE Software	=16.11.1s
Cisco IOS XE Software	=16.11.2
Cisco IOS XE Software	=16.12.1
Cisco IOS XE Software	=16.12.1a
Cisco IOS XE Software	=16.12.1c
Cisco IOS XE Software	=16.12.1s
Cisco IOS XE Software	=16.12.1t
Cisco IOS XE Software	=16.12.1w
Cisco IOS XE Software	=16.12.1x
Cisco IOS XE Software	=16.12.1y
Cisco IOS XE Software	=16.12.1z
Cisco IOS XE Software	=16.12.1z1
Cisco IOS XE Software	=16.12.1za
Cisco IOS XE Software	=16.12.2
Cisco IOS XE Software	=16.12.2a
Cisco IOS XE Software	=16.12.2s
Cisco IOS XE Software	=16.12.2t
Cisco IOS XE Software	=16.12.3
Cisco IOS XE Software	=16.12.3a
Cisco IOS XE Software	=16.12.3s
Cisco IOS XE Software	=16.12.4
Cisco IOS XE Software	=16.12.4a
Cisco IOS XE Software	=17.1.1
Cisco IOS XE Software	=17.1.1a
Cisco IOS XE Software	=17.1.1s
Cisco IOS XE Software	=17.1.1t
Cisco IOS XE Software	=17.1.2
Cisco IOS XE Software	=17.2.1
Cisco IOS XE Software	=17.2.1a
Cisco IOS XE Software	=17.2.1r
Cisco IOS XE Software	=17.2.1v
Cisco IOS XE Software	=17.2.2
Cisco IOS XE Software	=17.2.3
Cisco IOS XE Software	=17.3.1
Cisco IOS XE Software	=17.3.1a
Cisco IOS XE Software	=17.3.1w

Never miss a vulnerability like this again

Reference Links

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-alg-dos-hbBS7SZE

Frequently Asked Questions

What is the severity of CVE-2021-1446?
CVE-2021-1446 has a critical severity rating, as it could allow an unauthenticated remote attacker to cause the affected device to reload.
How do I fix CVE-2021-1446?
To fix CVE-2021-1446, update your Cisco IOS XE software to a version that addresses the vulnerability.
What types of devices are affected by CVE-2021-1446?
CVE-2021-1446 affects Cisco IOS XE devices with specific versions that utilize the DNS ALG functionality in NAT.
Can CVE-2021-1446 be exploited remotely?
Yes, CVE-2021-1446 can be exploited remotely without authentication, making it particularly dangerous.
What are the potential impacts of CVE-2021-1446?
The potential impacts of CVE-2021-1446 include unexpected device reloads, leading to service disruption.

agent/type
agent/references
agent/author
agent/severity
agent/weakness
agent/title
agent/description
agent/first-publish-date
agent/event
collector/mitre-cve
source/MITRE
agent/last-modified-date
agent/source
agent/tags
agent/softwarecombine
collector/nvd-index
agent/software-canonical-lookup-request
vendor/cisco
canonical/cisco ios xe
version/cisco ios xe/3.7.0bs
version/cisco ios xe/3.7.0s
version/cisco ios xe/3.7.0xas
version/cisco ios xe/3.7.0xbs
version/cisco ios xe/3.7.1as
version/cisco ios xe/3.7.1s
version/cisco ios xe/3.7.2s
version/cisco ios xe/3.7.2ts
version/cisco ios xe/3.7.3s
version/cisco ios xe/3.7.4as
version/cisco ios xe/3.7.4s
version/cisco ios xe/3.7.5s
version/cisco ios xe/3.7.6s
version/cisco ios xe/3.7.7s
version/cisco ios xe/3.7.8s
version/cisco ios xe/3.8.0s
version/cisco ios xe/3.8.1s
version/cisco ios xe/3.8.2s
version/cisco ios xe/3.9.0as
version/cisco ios xe/3.9.0s
version/cisco ios xe/3.9.0xas
version/cisco ios xe/3.9.1as
version/cisco ios xe/3.9.1s
version/cisco ios xe/3.9.2s
version/cisco ios xe/3.10.0s
version/cisco ios xe/3.10.1s
version/cisco ios xe/3.10.1xbs
version/cisco ios xe/3.10.1xcs
version/cisco ios xe/3.10.2as
version/cisco ios xe/3.10.2s
version/cisco ios xe/3.10.2ts
version/cisco ios xe/3.10.3s
version/cisco ios xe/3.10.4s
version/cisco ios xe/3.10.5s
version/cisco ios xe/3.10.6s
version/cisco ios xe/3.10.7s
version/cisco ios xe/3.10.8as
version/cisco ios xe/3.10.8s
version/cisco ios xe/3.10.9s
version/cisco ios xe/3.10.10s
version/cisco ios xe/3.11.0s
version/cisco ios xe/3.11.1s
version/cisco ios xe/3.11.2s
version/cisco ios xe/3.11.3s
version/cisco ios xe/3.11.4s
version/cisco ios xe/3.12.0as
version/cisco ios xe/3.12.0s
version/cisco ios xe/3.12.1s
version/cisco ios xe/3.12.2s
version/cisco ios xe/3.12.3s
version/cisco ios xe/3.12.4s
version/cisco ios xe/3.13.0as
version/cisco ios xe/3.13.0s
version/cisco ios xe/3.13.1s
version/cisco ios xe/3.13.2as
version/cisco ios xe/3.13.2s
version/cisco ios xe/3.13.3s
version/cisco ios xe/3.13.4s
version/cisco ios xe/3.13.5as
version/cisco ios xe/3.13.5s
version/cisco ios xe/3.13.6as
version/cisco ios xe/3.13.6bs
version/cisco ios xe/3.13.6s
version/cisco ios xe/3.13.7as
version/cisco ios xe/3.13.7s
version/cisco ios xe/3.13.8s
version/cisco ios xe/3.13.9s
version/cisco ios xe/3.13.10s
version/cisco ios xe/3.14.0s
version/cisco ios xe/3.14.1s
version/cisco ios xe/3.14.2s
version/cisco ios xe/3.14.3s
version/cisco ios xe/3.14.4s
version/cisco ios xe/3.15.0s
version/cisco ios xe/3.15.1cs
version/cisco ios xe/3.15.1s
version/cisco ios xe/3.15.1xbs
version/cisco ios xe/3.15.2s
version/cisco ios xe/3.15.2xbs
version/cisco ios xe/3.15.3s
version/cisco ios xe/3.15.4s
version/cisco ios xe/3.16.0as
version/cisco ios xe/3.16.0bs
version/cisco ios xe/3.16.0cs
version/cisco ios xe/3.16.0s
version/cisco ios xe/3.16.1as
version/cisco ios xe/3.16.1s
version/cisco ios xe/3.16.2as
version/cisco ios xe/3.16.2bs
version/cisco ios xe/3.16.2s
version/cisco ios xe/3.16.3as
version/cisco ios xe/3.16.3s
version/cisco ios xe/3.16.4as
version/cisco ios xe/3.16.4bs
version/cisco ios xe/3.16.4cs
version/cisco ios xe/3.16.4ds
version/cisco ios xe/3.16.4es
version/cisco ios xe/3.16.4gs
version/cisco ios xe/3.16.4s
version/cisco ios xe/3.16.5as
version/cisco ios xe/3.16.5bs
version/cisco ios xe/3.16.5s
version/cisco ios xe/3.16.6bs
version/cisco ios xe/3.16.6s
version/cisco ios xe/3.16.7as
version/cisco ios xe/3.16.7bs
version/cisco ios xe/3.16.7s
version/cisco ios xe/3.16.8s
version/cisco ios xe/3.16.9s
version/cisco ios xe/3.16.10as
version/cisco ios xe/3.16.10s
version/cisco ios xe/3.17.0s
version/cisco ios xe/3.17.1as
version/cisco ios xe/3.17.1s
version/cisco ios xe/3.17.2s
version/cisco ios xe/3.17.3s
version/cisco ios xe/3.17.4s
version/cisco ios xe/3.18.0as
version/cisco ios xe/3.18.0s
version/cisco ios xe/3.18.0sp
version/cisco ios xe/3.18.1asp
version/cisco ios xe/3.18.1bsp
version/cisco ios xe/3.18.1csp
version/cisco ios xe/3.18.1gsp
version/cisco ios xe/3.18.1hsp
version/cisco ios xe/3.18.1isp
version/cisco ios xe/3.18.1s
version/cisco ios xe/3.18.1sp
version/cisco ios xe/3.18.2asp
version/cisco ios xe/3.18.2s
version/cisco ios xe/3.18.2sp
version/cisco ios xe/3.18.3asp
version/cisco ios xe/3.18.3bsp
version/cisco ios xe/3.18.3s
version/cisco ios xe/3.18.3sp
version/cisco ios xe/3.18.4s
version/cisco ios xe/3.18.4sp
version/cisco ios xe/3.18.5sp
version/cisco ios xe/3.18.6sp
version/cisco ios xe/3.18.7sp
version/cisco ios xe/3.18.8asp
version/cisco ios xe/3.18.8sp
version/cisco ios xe/16.1.1
version/cisco ios xe/16.1.2
version/cisco ios xe/16.1.3
version/cisco ios xe/16.2.1
version/cisco ios xe/16.2.2
version/cisco ios xe/16.3.1
version/cisco ios xe/16.3.1a
version/cisco ios xe/16.3.2
version/cisco ios xe/16.3.3
version/cisco ios xe/16.3.4
version/cisco ios xe/16.3.5
version/cisco ios xe/16.3.5b
version/cisco ios xe/16.3.6
version/cisco ios xe/16.3.7
version/cisco ios xe/16.3.8
version/cisco ios xe/16.3.9
version/cisco ios xe/16.3.10
version/cisco ios xe/16.3.11
version/cisco ios xe/16.4.1
version/cisco ios xe/16.4.2
version/cisco ios xe/16.4.3
version/cisco ios xe/16.5.1
version/cisco ios xe/16.5.1a
version/cisco ios xe/16.5.1b
version/cisco ios xe/16.5.2
version/cisco ios xe/16.5.3
version/cisco ios xe/16.6.1
version/cisco ios xe/16.6.2
version/cisco ios xe/16.6.3
version/cisco ios xe/16.6.4
version/cisco ios xe/16.6.4a
version/cisco ios xe/16.6.4s
version/cisco ios xe/16.6.5
version/cisco ios xe/16.6.5a
version/cisco ios xe/16.6.5b
version/cisco ios xe/16.6.6
version/cisco ios xe/16.6.7
version/cisco ios xe/16.6.7a
version/cisco ios xe/16.6.8
version/cisco ios xe/16.7.1
version/cisco ios xe/16.7.1a
version/cisco ios xe/16.7.1b
version/cisco ios xe/16.7.2
version/cisco ios xe/16.7.3
version/cisco ios xe/16.7.4
version/cisco ios xe/16.8.1
version/cisco ios xe/16.8.1a
version/cisco ios xe/16.8.1b
version/cisco ios xe/16.8.1c
version/cisco ios xe/16.8.1d
version/cisco ios xe/16.8.1e
version/cisco ios xe/16.8.1s
version/cisco ios xe/16.8.2
version/cisco ios xe/16.8.3
version/cisco ios xe/16.9.1
version/cisco ios xe/16.9.1a
version/cisco ios xe/16.9.1b
version/cisco ios xe/16.9.1c
version/cisco ios xe/16.9.1d
version/cisco ios xe/16.9.1s
version/cisco ios xe/16.9.2
version/cisco ios xe/16.9.2a
version/cisco ios xe/16.9.2s
version/cisco ios xe/16.9.3
version/cisco ios xe/16.9.3a
version/cisco ios xe/16.9.3h
version/cisco ios xe/16.9.3s
version/cisco ios xe/16.9.4
version/cisco ios xe/16.9.4c
version/cisco ios xe/16.9.5
version/cisco ios xe/16.9.5f
version/cisco ios xe/16.9.6
version/cisco ios xe/16.10.1
version/cisco ios xe/16.10.1a
version/cisco ios xe/16.10.1b
version/cisco ios xe/16.10.1c
version/cisco ios xe/16.10.1d
version/cisco ios xe/16.10.1e
version/cisco ios xe/16.10.1f
version/cisco ios xe/16.10.1g
version/cisco ios xe/16.10.1s
version/cisco ios xe/16.10.2
version/cisco ios xe/16.10.3
version/cisco ios xe/16.11.1
version/cisco ios xe/16.11.1a
version/cisco ios xe/16.11.1b
version/cisco ios xe/16.11.1c
version/cisco ios xe/16.11.1s
version/cisco ios xe/16.11.2
version/cisco ios xe/16.12.1
version/cisco ios xe/16.12.1a
version/cisco ios xe/16.12.1c
version/cisco ios xe/16.12.1s
version/cisco ios xe/16.12.1t
version/cisco ios xe/16.12.1w
version/cisco ios xe/16.12.1x
version/cisco ios xe/16.12.1y
version/cisco ios xe/16.12.1z
version/cisco ios xe/16.12.1z1
version/cisco ios xe/16.12.1za
version/cisco ios xe/16.12.2
version/cisco ios xe/16.12.2a
version/cisco ios xe/16.12.2s
version/cisco ios xe/16.12.2t
version/cisco ios xe/16.12.3
version/cisco ios xe/16.12.3a
version/cisco ios xe/16.12.3s
version/cisco ios xe/16.12.4
version/cisco ios xe/16.12.4a
version/cisco ios xe/17.1.1
version/cisco ios xe/17.1.1a
version/cisco ios xe/17.1.1s
version/cisco ios xe/17.1.1t
version/cisco ios xe/17.1.2
version/cisco ios xe/17.2.1
version/cisco ios xe/17.2.1a
version/cisco ios xe/17.2.1r
version/cisco ios xe/17.2.1v
version/cisco ios xe/17.2.2
version/cisco ios xe/17.2.3
version/cisco ios xe/17.3.1
version/cisco ios xe/17.3.1a
version/cisco ios xe/17.3.1w