Cisco · Unified Communications Manager
CVE-2026-20045
Cisco Unified Communications Products Remote Code Execution Vulnerability
무엇인가
A vulnerability in Cisco Unified Communications Manager (Unified CM), Cisco Unified Communications Manager Session Management Edition (Unified CM SME), Cisco Unified Communications Manager IM & Presence Service (Unified CM IM&P), Cisco Unity Connection, and Cisco Webex Calling Dedicated Instance could allow an unauthenticated, remote attacker to execute arbitrary commands on the underlying operating system of an affected device.
This vulnerability is due to improper validation of user-supplied input in HTTP requests. An attacker could exploit this vulnerability by sending a sequence of crafted HTTP requests to the web-based management interface of an affected device. A successful exploit could allow the attacker to obtain user-level access to the underlying operating system and then elevate privileges to root.
Note: Cisco has assigned this security advisory a Security Impact Rating (SIR) of Critical rather than High as the score indicates. The reason is that exploitation of this vulnerability could result in an attacker elevating privileges to root.
CISA: Cisco Unified Communications Manager (Unified CM), Cisco Unified Communications Manager Session Management Edition (Unified CM SME), Cisco Unified Communications Manager IM & Presence Service (Unified CM IM&P), Cisco Unity Connection, and Cisco Webex Calling Dedicated Instance contain a code injection vulnerability that could allow the attacker to obtain user-level access to the underlying operating system and then elevate privileges to root.
할 일
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
미국 연방 기관 조치 기한: 2026년 2월 11일
Cisco의 다른 악용된 결함
| 추가됨 | 취약점 | 제품 | 심각도 | 공격 가능성 |
|---|---|---|---|---|
| 2026. 6. 25. | Server-Side Request Forgery (SSRF) | Unified Communications Manager | 높음 8.6 | 88% |
| 2026. 10. 14. | Relative Path Traversal | Secure Email Gateway | 치명적 9.8 | 2.2% |
| 2026. 9. 30. | Hex Encoding | Catalyst SD-WAN Manager | 치명적 9.8 | 39% |
| 2026. 9. 16. | Incorrect Use of Privileged APIs | Identity Services Engine | 치명적 10.0 | 76% |
| 2026. 9. 14. | SQL Injection | Secure Email Gateway | 치명적 9.8 | 30% |
| 2026. 9. 9. | Firewall Management Center Authentication Bypass Using an Alternate Path or Channel | Secure Firewall Management Center (FMC) and Security Cloud Control (SCC) Firewall Management | 치명적 10.0 | 88% |
| 2026. 8. 11. | Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) Heap Inspection | Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) | 높음 8.6 | 1.0% |
| 2026. 7. 29. | Secure Firewall Management Center Use of Hard-coded Password | Secure Firewall Management Center (FMC) | 보통 5.3 | 35% |
출처: Known Exploited Vulnerabilities(CISA, 퍼블릭 도메인), CVE records(cve.org), EPSS(FIRST). 공격 가능성은 누군가 향후 30일 안에 이 결함을 악용하려 할 확률에 대한 EPSS 추정치입니다.