cisco-sa-expressway-overwrite-3buqW8LH: Cisco Expressway Series and Cisco TelePresence Video Communication Server Vulnerabilities

Published Jul 6, 2022
·
Updated

Multiple vulnerabilities in the API and in the web-based management interface of Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) could allow a remote attacker to overwrite arbitrary files or conduct null byte poisoning attacks on an affected

Credit

CVE-2022-20812 was found during internal security testing by Jason Crowder(the Cisco Advanced Security Initiatives Group), CVE-2022-20813 was found during internal security testing by Deklan Evans(the Cisco ASIG)

Affected Software

2 affected componentsFixes available
Cisco Expressway Series>=.0, <14, <=14.0, <14.31 (late Apr 2023)
14.31 (late Apr 2023)
Cisco TelePresence VCS>=.0, <14, <=14.0, <14.31 (late Apr 2023)
14.31 (late Apr 2023)

Event History

Jul 6, 2022
Advisory Published
04:00 PM
Data Sourced
04:00 PM
DescriptionSeverityWeakness

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-expressway-overwrite-3buqW8LH?

The severity of cisco-sa-expressway-overwrite-3buqW8LH is critical with a CVSS score of 9.

2

How can a remote attacker exploit cisco-sa-expressway-overwrite-3buqW8LH vulnerability?

A remote attacker can exploit cisco-sa-expressway-overwrite-3buqW8LH by overwriting arbitrary files or conducting null byte poisoning attacks on an affected device.

3

Which Cisco products are affected by cisco-sa-expressway-overwrite-3buqW8LH vulnerability?

The Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) are affected by cisco-sa-expressway-overwrite-3buqW8LH vulnerability.

4

How do I fix cisco-sa-expressway-overwrite-3buqW8LH vulnerability?

To fix cisco-sa-expressway-overwrite-3buqW8LH vulnerability, update the affected devices to Cisco Expressway Series version 14.31 (late Apr 2023) or later.

5

What is CWE-36?

CWE-36 refers to a null byte poisoning vulnerability.

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