CVE-2025-20276

LOW
Published Jun 4, 2025 Modified Jul 22, 2025 CWE-502

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.

CVSS v3.1 Score

3.8
LOW
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N

Weakness Type (CWE)

CWE-502 Deserialization of Untrusted Data

Affected Products

Vendor Product
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express
cisco unified_contact_center_express

References

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. It has a CVSS v3.1 base score of 3.8 (LOW).
How severe is CVE-2025-20276? +
CVE-2025-20276 has a CVSS v3.1 score of 3.8 out of 10, rated LOW. This is a low-severity vulnerability with limited impact.
What products are affected by CVE-2025-20276? +
CVE-2025-20276 affects products from cisco, specifically: unified_contact_center_express. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2025-20276? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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