CVE-2026-20263 – Cisco IOS XE Software

CVSS 8.6 IMPORTANT Critical - Same Day Deployment

“Critical and high-severity weaknesses put core network devices at risk of compromise and service disruption.”

Cisco software hardening releases address eight vulnerabilities in IOS XE Software. CVE-2026-20272 has a CVSS score of 9.8, Critical severity. CVE-2026-20267 has a CVSS score of 9.0, Critical severity. CVE-2026-20263, CVE-2026-20268, CVE-2026-20269, CVE-2026-20270, CVE-2026-20271, and CVE-2026-20273 each have a CVSS score of 8.6, High severity.

The vulnerabilities span access control, memory handling, input validation, resource management, control flow, and special-element neutralization. The BEEP vulnerability can allow an unauthenticated remote attacker to force an affected device to reload, causing denial of service, while the memory-handling flaw presents code execution and privilege escalation risk.

Key Details

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: None
CWE Classification: CWE-388

Patch this CVE on all your endpoints in under 5 minutes. First 200 endpoints are free forever, scale as needed.