cisco-sa-sdwan-dosmulti-48jJuEUP: Cisco SD-WAN Denial of Service Vulnerabilities

Published Jan 20, 2021
·
Updated

Multiple vulnerabilities in Cisco SD-WAN products could allow an unauthenticated, remote attacker to execute denial of service (DoS) attacks against an affected device. For more information about these vulnerabilities, see the Details section of this advisory. Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities. This advisory is available at the following link:https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-dosmulti-48jJuEUP

Credit

CVE-2021-1273: This vulnerability was found by Joseph Connor(Cisco during internal security testing), CVE-2021-1274: This vulnerability was found by Arthur Vidineyev(Cisco during internal security testing), CVE-2021-1278: This vulnerability was found by Andrew Kim(Cisco during internal security testing), CVE-2021-1279:, CVE-2021-1241: This vulnerability were found during the resolution(a Cisco TAC support case)

Affected Software

2 affected componentsFixes available
Cisco SD-WAN Releases=20.4, <20.4.1, =20.3, <20.3.1, >=19.3, <=20.1, <20.1.2, =19.2, <19.2.4, >=.3, <18, =18.3, <=18.4, <18.4.6
20.4.120.3.120.1.219.2.418.4.6
Cisco IOS XE SD-WAN Releases>=16.9, =16.10, =16.11, <=16.12, <16.12.4
16.12.4

Event History

Jan 20, 2021
Advisory Published
via Cisco·04:00 PM

Child vulnerabilities

Contains the following vulnerabilities.

Free Weekly Intel

Don't miss critical vulnerabilities

Join thousands of security professionals who receive our weekly digest of trending CVEs, zero-days, and exploited vulnerabilities.

No spam. Unsubscribe anytime.

Frequently Asked Questions

1

What is the severity of cisco-sa-sdwan-dosmulti-48jJuEUP?

The severity of cisco-sa-sdwan-dosmulti-48jJuEUP is critical due to the potential for denial of service attacks.

2

How do I fix cisco-sa-sdwan-dosmulti-48jJuEUP?

To fix cisco-sa-sdwan-dosmulti-48jJuEUP, upgrade your affected Cisco SD-WAN and IOS XE SD-WAN products to the recommended software versions.

3

Which Cisco products are affected by cisco-sa-sdwan-dosmulti-48jJuEUP?

Affected products include various versions of Cisco SD-WAN and IOS XE SD-WAN releases.

4

Can cisco-sa-sdwan-dosmulti-48jJuEUP be exploited remotely?

Yes, cisco-sa-sdwan-dosmulti-48jJuEUP can be exploited by an unauthenticated remote attacker.

5

Is there a workaround for cisco-sa-sdwan-dosmulti-48jJuEUP?

There are no specific workarounds for cisco-sa-sdwan-dosmulti-48jJuEUP; updating the software is recommended.

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.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203