CVE WATCH / VULNERABILITY DETAIL
CVE-2026-20221
MEDIUMCVSS 5.8NVD feed
Published 21 October 2026 · tracked since 22 October 2026
Description
Multiple Cisco products are affected by a vulnerability in the generic routing encapsulation (GRE) tunnel decapsulation feature of the Snort 3 Detection Engine that could allow an unauthenticated, remote attacker to cause an unexpected restart of the Snort 3 Detection Engine. This vulnerability i
References
- NVD — National Vulnerability Database
- CVE.org record (MITRE)
- CISA Known Exploited Vulnerabilities catalog
Latest tracked vulnerabilities
- CVE-2026-76462 MEDIUM 5.5
- CVE-2026-20236 HIGH 7.5
- CVE-2026-20291 HIGH 7.8
- CVE-2026-20356 HIGH 7.5
- CVE-2026-20043 CRITICAL 9
- CVE-2026-20179 MEDIUM 5.8
- CVE-2026-20197 MEDIUM 5.8
- CVE-2026-20218 MEDIUM 5.8
- CVE-2026-20011 MEDIUM 5.8
- CVE-2026-20019 MEDIUM 5.8