CVE-2024-20253: cisco cisco packaged contact center enterprise Deserialization of Untrusted Data
Vulnerability summary
CVE-2024-20253 is a critical (CVSS 10.0) Deserialization of Untrusted Data vulnerability in cisco cisco packaged contact center enterprise. EPSS estimates a 2.40% chance of exploitation in the next 30 days, higher than 83.7% of scored vulnerabilities.
Timeline
- 26-01-2024PublishedVulnerability first disclosed.
- 29-05-2025Last modifiedVulnerability information updated.
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.
CVSS metrics
2 scores · 2 sources · 1 version- CVE.orgCNA9.9CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:HDiffers
EPSS trend
Probability
2.40%
Chance of exploitation in the next 30 days
Percentile
84%
Versus all other CVEs
30-day change
0.00 pp
From 2.40% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Cisco13 products
- cisco packaged contact center enterprise10.5(1) | 10.5(2) | 10.5(1)_ES7 | 10.5(2)_ES8 | 11.0(1) | 11.0(2) | 11.5(1) | 11.6(1) | 11.6(2) | 12.0(1) | 12.5(1) | 12.5(2) | 12.6(1) | 12.6(2)
- cisco unified communications manager12.0(1)SU1 | 12.0(1)SU2 | 12.0(1)SU3 | 12.0(1)SU4 | 12.0(1)SU5 | 12.5(1) | 12.5(1)SU1 | 12.5(1)SU2 | 12.5(1)SU3 | 12.5(1)SU4 | 12.5(1)SU5 | 12.5(1)SU6 | 12.5(1)SU7 | 12.5(1)SU7a | 14 | 14SU1 | 14SU2
- cisco unified communications manager / cisco unity connection10.5(2)SU10 | 10.5(1) | 10.5(1)SU1 | 10.5(1)SU1a | 10.5(2) | 10.5(2)SU1 | 10.5(2)SU2 | 10.5(2)SU3 | 10.5(2)SU4 | 10.5(2)SU5 | 10.5(2)SU6 | 10.5(2)SU7 | 10.5(2)SU8 | 10.5(2)SU9 | 10.5(2)SU2a | 10.5(2)SU3a | 10.5(2)SU4a | 10.5(2)SU6a | 11.0.1 | 11.0(1a) | 11.0(1a)SU1 | 11.0(1a)SU2 | 11.0(1a)SU3 | 11.0(1a)SU3a | 11.0(1a)SU4 | 11.0.2 | 11.0.5 | 11.5(1) | 11.5(1)SU1 | 11.5(1)SU2 | 11.5(1)SU3 | 11.5(1)SU3a | 11.5(1)SU3b | 11.5(1)SU4 | 11.5(1)SU5 | 11.5(1)SU6 | 11.5(1)SU7 | 11.5(1)SU8 | 11.5(1)SU9 | 11.5(1)SU10 | 11.5(1)SU11 | 10.0(1)SU2 | 10.0(1) | 10.0(1)SU1
- cisco unified communications manager im and presence service10.5(1) | 10.5(2) | 10.5(2a) | 10.5(2b) | 10.5(2)SU3 | 10.5(2)SU2a | 10.5(2)SU4a | 10.5(2)SU4 | 10.5(1)SU3 | 10.5(1)SU1 | 10.5(2)SU1 | 10.5(2)SU2 | 10.5(1)SU2 | 11.5(1) | 11.5(1)SU1 | 11.5(1)SU2 | 11.5(1)SU3 | 11.5(1)SU3a | 11.5(1)SU4 | 11.5(1)SU5 | 11.5(1)SU5a | 11.5(1)SU6 | 11.5(1)SU7 | 11.5(1)SU8 | 11.5(1)SU9 | 11.5(1)SU10 | 11.5(1)SU11 | 11.0(1) | 11.0(1)SU1 | 12.5(1) | 12.5(1)SU1 | 12.5(1)SU2 | 12.5(1)SU3 | 12.5(1)SU4 | 12.5(1)SU5 | 12.5(1)SU6 | 12.5(1)SU7 | 14 | 14SU1 | 14SU2 | 14SU2a | 10.0(1) | 10.0(1)SU1 | 10.0(1)SU2
- cisco unified contact center enterprisen/a
1 vendor · 13 products
References
1 links- sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cucm-rce-bWNzQcUmIssue TrackingVendor Advisory