Cisco Unified Communications 0

Cybersecuritynews •Guru Baran • January 22, 2026

Cisco has disclosed a critical zero-day remote code execution (RCE) vulnerability, CVE-2026-20045, actively exploited in the wild. Affecting key Unified Communications products, this flaw allows unauthenticated attackers to run arbitrary commands on the underlying OS, potentially gaining root access. The Cisco Product Security Incident Response Team (PSIRT) confirmed exploitation attempts and urged immediate patching. The […]

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Cisco Issues Warning for Critical Zero-Day Vulnerability in Unified Communications Cisco has disclosed a critical zero-day remote code execution vulnerability, CVE-2026-20045, affecting multiple Unified Communications products. This flaw allows unauthenticated attackers to execute arbitrary commands on the underlying operating system, potentially gaining root access. The Cisco Product Security Incident Response Team (PSIRT) has confirmed active exploitation attempts and urges immediate patching. 4 sources 84

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