Plataforma
cisco
Componente
cisco-unified-contact-center-express
Corregido en
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CVE-2025-20277 describes a Path Traversal vulnerability affecting Cisco Unified Contact Center Express. This flaw allows an authenticated, local attacker to potentially execute arbitrary code on the affected device. The vulnerability impacts versions 10.0(1)SU1 through 12.5(1)SU3. Cisco has advised users to upgrade to a patched version to remediate this issue.
Successful exploitation of CVE-2025-20277 could grant an attacker complete control over the Cisco Unified CCX device. This includes the ability to modify system configurations, steal sensitive data (call recordings, user credentials), and potentially pivot to other systems on the network. The requirement for administrative credentials limits the initial attack vector, but once gained, the impact is significant. The attack requires a crafted web request followed by a specific command via SSH, suggesting a degree of technical sophistication is needed, but the potential for remote code execution makes this a serious concern.
CVE-2025-20277 was publicly disclosed on June 4, 2025. The CVSS score of 3.4 (LOW) indicates a relatively low probability of exploitation, but the potential impact warrants attention. There are currently no publicly available proof-of-concept exploits, but the path traversal nature of the vulnerability makes it likely that one will emerge. This vulnerability is not currently listed on the CISA KEV catalog.
Organizations heavily reliant on Cisco Unified Contact Center Express for their contact center operations are at significant risk. This includes businesses with legacy deployments of older, unpatched versions (10.0(1)SU1–12.5(1)SU3) and those with limited resources for timely patching. Shared hosting environments where multiple tenants share a single CCX instance are also particularly vulnerable.
• linux / server:
journalctl -u ccx | grep -i "path traversal"• cisco / server:
show running-config | grep -i "path traversal"• generic web:
curl -I <CCX_IP>/<vulnerable_endpoint> | grep -i "path traversal"disclosure
Estado del Exploit
EPSS
0.04% (12% percentil)
CISA SSVC
Vector CVSS
The primary mitigation for CVE-2025-20277 is to upgrade to a patched version of Cisco Unified Contact Center Express as soon as it becomes available. If an immediate upgrade is not possible, restrict access to the web-based management interface to only trusted administrators. Implement strong authentication measures, including multi-factor authentication, to prevent unauthorized access. Consider using a web application firewall (WAF) to filter potentially malicious requests targeting the vulnerable endpoint. Monitor system logs for suspicious activity, particularly SSH login attempts and unusual web requests.
Actualice Cisco Unified Contact Center Express a una versión que no esté afectada por esta vulnerabilidad. Consulte el advisory de seguridad de Cisco para obtener más detalles y las versiones corregidas.
Análisis de vulnerabilidades y alertas críticas directamente en tu correo.
CVE-2025-20277 is a vulnerability in Cisco Unified Contact Center Express allowing authenticated local attackers to execute code via a path traversal flaw. It affects versions 10.0(1)SU1–12.5(1)SU3.
If you are using Cisco Unified Contact Center Express versions 10.0(1)SU1 through 12.5(1)SU3, you are potentially affected by this vulnerability. Check your current version and upgrade if necessary.
The recommended fix is to upgrade to a patched version of Cisco Unified Contact Center Express as soon as it becomes available. Until then, restrict access and monitor logs.
As of June 4, 2025, there are no confirmed reports of active exploitation, but the vulnerability's nature suggests potential for future exploitation.
Please refer to the official Cisco Security Advisory for CVE-2025-20277 on the Cisco website (search for the CVE ID on Cisco.com).
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