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CVE-2025-20276

HIGHCVSS 7.2/10EPSS 0.36%

Last modified

CVE-2025-20276 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. A vulnerability in the web-based management interface of Cisco Unified CCX could allow an authenticated, remote attacker to execute arbitrary code on an affected device. To exploit this vulnerability, the attacker must have valid administrative credentials.  This vulnerability is due to insecure deserialization of Java objects by the affected software. EPSS estimates a 0.36% chance of exploitation in the next 30 days.

Description

A vulnerability in the web-based management interface of Cisco Unified CCX could allow an authenticated, remote attacker to execute arbitrary code on an affected device. To exploit this vulnerability, the attacker must have valid administrative credentials.  This vulnerability is due to insecure deserialization of Java objects by the affected software. An attacker could exploit this vulnerability by sending a crafted Java object to an affected device. A successful exploit could allow the attacker to execute arbitrary code on the underlying operating system of an affected device as a low-privilege user. A successful exploit could also allow the attacker to undertake further actions to elevate their privileges to root.

Metrics

CVSS 3.1
7.2/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
0.36%

28.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoUnified Contact Center Express8.5\(1\)
CiscoUnified Contact Center Express9.0\(2\)su3es04
CiscoUnified Contact Center Express10.0\(1\)su1
CiscoUnified Contact Center Express10.0\(1\)su1es04
CiscoUnified Contact Center Express10.5\(1\)
CiscoUnified Contact Center Express10.5\(1\)su1
CiscoUnified Contact Center Express10.5\(1\)su1es10
CiscoUnified Contact Center Express10.6\(1\)
CiscoUnified Contact Center Express10.6\(1\)su1
CiscoUnified Contact Center Express10.6\(1\)su2
CiscoUnified Contact Center Express10.6\(1\)su2es04
CiscoUnified Contact Center Express10.6\(1\)su3
CiscoUnified Contact Center Express10.6\(1\)su3es01
CiscoUnified Contact Center Express10.6\(1\)su3es02
CiscoUnified Contact Center Express10.6\(1\)su3es03
CiscoUnified Contact Center Express11.0\(1\)su1
CiscoUnified Contact Center Express11.0\(1\)su1es02
CiscoUnified Contact Center Express11.0\(1\)su1es03
CiscoUnified Contact Center Express11.5\(1\)es01
CiscoUnified Contact Center Express11.5\(1\)su1
CiscoUnified Contact Center Express11.5\(1\)su1es01
CiscoUnified Contact Center Express11.5\(1\)su1es02
CiscoUnified Contact Center Express11.5\(1\)su1es03
CiscoUnified Contact Center Express11.6\(1\)
CiscoUnified Contact Center Express11.6\(1\)es01
CiscoUnified Contact Center Express11.6\(1\)es02
CiscoUnified Contact Center Express11.6\(2\)
CiscoUnified Contact Center Express11.6\(2\)es01
CiscoUnified Contact Center Express11.6\(2\)es02
CiscoUnified Contact Center Express11.6\(2\)es03
CiscoUnified Contact Center Express11.6\(2\)es04
CiscoUnified Contact Center Express11.6\(2\)es05
CiscoUnified Contact Center Express11.6\(2\)es06
CiscoUnified Contact Center Express11.6\(2\)es07
CiscoUnified Contact Center Express11.6\(2\)es08
CiscoUnified Contact Center Express12.0\(1\)
CiscoUnified Contact Center Express12.0\(1\)es01
CiscoUnified Contact Center Express12.0\(1\)es02
CiscoUnified Contact Center Express12.0\(1\)es03
CiscoUnified Contact Center Express12.0\(1\)es04
CiscoUnified Contact Center Express12.5\(1\)
CiscoUnified Contact Center Express12.5\(1\)_su01_es01
CiscoUnified Contact Center Express12.5\(1\)_su01_es02
CiscoUnified Contact Center Express12.5\(1\)_su01_es03
CiscoUnified Contact Center Express12.5\(1\)_su02_es01
CiscoUnified Contact Center Express12.5\(1\)_su02_es02
CiscoUnified Contact Center Express12.5\(1\)_su02_es03
CiscoUnified Contact Center Express12.5\(1\)_su02_es04
CiscoUnified Contact Center Express12.5\(1\)_su03_es01
CiscoUnified Contact Center Express12.5\(1\)_su03_es02

Showing 50 of 60 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2025-20276?
A vulnerability in the web-based management interface of Cisco Unified CCX could allow an authenticated, remote attacker to execute arbitrary code on an affected device. To exploit this vulnerability, the attacker must have valid administrative credentials.  This vulnerability is due to insecure deserialization of Java objects by the affected software. An attacker could exploit this vulnerability by sending a crafted Java object to an affected device. A successful exploit could allow the attacker to execute arbitrary code on the underlying operating system of an affected device as a low-privilege user. A successful exploit could also allow the attacker to undertake further actions to elevate their privileges to root.
How severe is CVE-2025-20276?
CVE-2025-20276 has a CVSS score of 7.2/10 (HIGH severity). The EPSS model estimates a 0.36% probability of exploitation in the next 30 days.
How do I fix CVE-2025-20276?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-20276?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST