CVE-2024-20253 Deserialization in Cisco Packaged Contact Center Enterprise
Unauthenticated remote attackers can execute arbitrary code and gain root access on Cisco Unified Communications products via crafted messages.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2024-20253?
CVE-2024-20253 is a critical unsafe deserialization vulnerability in Cisco Unified Communications Manager, published on 26 Jan 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in multiple Cisco Unified Communications and Contact Center Solutions products could allow an unauthenticated, remote attacker to execute arbitrary code on an affected device. This vulnerability is due to the improper processing of user-provided data that is being read into memory. An attacker could exploit this vulnerability by sending a crafted message to a listening port of an affected device. A successful exploit could allow the attacker to execute arbitrary commands on the underlying operating system with the privileges of the web services user. With access to the underlying operating system, the attacker could also establish root access on the affected device.
Weakness: CWE-502
Which versions are affected by CVE-2024-20253?
It affects 5 products.
Products include Cisco Unified Communications Manager, Cisco Unified Communications Manager Im and Presence Service, Cisco Unified Contact Center Express, Cisco Unity Connection, Cisco Virtualized Voice Browser.
How do I fix CVE-2024-20253?
No fix has been published for CVE-2024-20253 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2024-20253 being exploited?
There is no known exploitation of CVE-2024-20253 in the wild and no public exploit code.
Other vulnerabilities in Cisco Unified Communications Manager
- CVE-2026-20230 Cisco Unified Communications Manager Server-Side Request Forgery (SSRF)
- CVE-2026-20045 Cisco Unified Communications Products Code Injection
- CVE-2025-20309 Cisco Unified Communications Manager Static SSH Credentials Vulnerability
- CVE-2011-1643 Information disclosure in n/a
- CVE-2009-0632 Information disclosure in n/a
Sources
Also known as GHSA-gxh9-cf3g-3v7f.