Security59 mOctober 22, 2026, 17:05

Cisco patches 34 vulnerabilities across Expressway, IOS XR and Snort 3

Cisco released fixes for 34 vulnerabilities in Expressway Series, IOS XR, Snort 3 and Unified Communications products. A critical RCE tracked as CVE-2026-76466 in Expressway allows arbitrary command execution as root and was patched in version X15.5.20. Cisco says it is not aware of any exploitation in the wild.

SecurityWeek

Open source

Cisco patches 34 vulnerabilities across Expressway, IOS XR and Snort 3

Expressway Series: 10 flaws, including critical RCE CVE-2026-76466
Unified Communications: 9 CVEs, three critical — CVE-2026-76473/76474/76475
Snort 3: 13 CVEs fixed in version 3.12.4.0
IOS XR: high-severity DoS CVE-2026-76505

#Cisco#Snort#IOSXR#Expressway

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