CVE-2025-20376
CVE-2025-20376 is a medium-severity vulnerability in Cisco Unified Contact Center Express with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-434.
Key facts
- Severity: Medium (CVSS 3.x base score 6.5)
- EPSS exploit prediction: 0% (35th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-37889
- Weakness: CWE-434
- Affected product: Cisco Unified Contact Center Express
- Published:
- Last modified:
Description
A vulnerability in the web UI of Cisco Unified CCX could allow an authenticated, remote attacker to upload and execute arbitrary files. This vulnerability is due to an insufficient input validation associated to file upload mechanisms. An attacker could exploit this vulnerability by uploading a malicious file to the web UI and executing it. A successful exploit could allow the attacker to execute arbitrary commands on the underlying system and elevate privileges to root. To exploit this vulnerability, the attacker must have valid administrative credentials.
Frequently asked questions
- What is CVE-2025-20376?
- A vulnerability in the web UI of Cisco Unified CCX could allow an authenticated, remote attacker to upload and execute arbitrary files. This vulnerability is due to an insufficient input validation associated to file upload mechanisms. An attacker could exploit this vulnerability by uploading a malicious file to the web UI and executing it. A successful exploit could allow the attacker to execute arbitrary commands on the underlying system and elevate privileges to root. To exploit this vulnerability, the attacker must have valid administrative credentials.
- How severe is CVE-2025-20376?
- CVE-2025-20376 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
- Is CVE-2025-20376 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2025-20376?
- CVE-2025-20376 primarily affects Cisco Unified Contact Center Express. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2025-20376?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2025-20376 have an EU (EUVD) identifier?
- Yes. CVE-2025-20376 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-37889.
- When was CVE-2025-20376 published?
- CVE-2025-20376 was published on 2025-11-05 and last updated on 2026-06-17.
References
Affected products (2)
- cpe:2.3:a:cisco:unified_contact_center_express:*:*:*:*:*:*:*:*
- cpe:2.3:a:cisco:unified_contact_center_express:15.0:*:*:*:*:*:*:*
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