7.7
CWE
400
Advisory Published
Updated

CVE-2022-20692: Cisco IOS XE Software NETCONF Over SSH Denial of Service Vulnerability

First published: Fri Apr 15 2022(Updated: )

A vulnerability in the NETCONF over SSH feature of Cisco IOS XE Software could allow a low-privileged, authenticated, remote attacker to cause a denial of service condition (DoS) on an affected device. This vulnerability is due to insufficient resource management. An attacker could exploit this vulnerability by initiating a large number of NETCONF over SSH connections. A successful exploit could allow the attacker to exhaust resources, causing the device to reload and resulting in a DoS condition on an affected device.

Credit: ykramarz@cisco.com

Affected SoftwareAffected VersionHow to fix
Cisco IOS XE Software=3.15.1xbs
Cisco IOS XE Software=3.15.2xbs
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=16.6.9
Cisco IOS XE Software=16.6.10
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=16.9.7
Cisco IOS XE Software=16.9.8
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=16.12.1z2
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=16.12.5
Cisco IOS XE Software=16.12.5a
Cisco IOS XE Software=16.12.5b
Cisco IOS XE Software=16.12.6
Cisco IOS XE Software=16.12.6a
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=17.1.3
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

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Frequently Asked Questions

  • What is the severity of CVE-2022-20692?

    The severity of CVE-2022-20692 is categorized as high, as it could allow a remote attacker to cause a denial of service condition.

  • How do I fix CVE-2022-20692?

    To fix CVE-2022-20692, you should upgrade your Cisco IOS XE Software to the recommended patched version provided by Cisco.

  • What devices are affected by CVE-2022-20692?

    CVE-2022-20692 affects various versions of Cisco IOS XE Software, including versions 3.15.1xbs, 3.15.2xbs, and several 16.x and 17.x versions.

  • Can CVE-2022-20692 be exploited locally?

    CVE-2022-20692 requires that an attacker be authenticated and remote, thus it cannot be exploited locally.

  • What type of vulnerability is CVE-2022-20692?

    CVE-2022-20692 is a denial of service (DoS) vulnerability caused by insufficient resource management in the NETCONF over SSH feature.

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2025 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203