CVE WATCH / VULNERABILITY DETAIL
CVE-2026-20011
MEDIUMCVSS 5.8NVD feed
Published 21 October 2026 · tracked since 22 October 2026
Description
Multiple Cisco products are affected by a vulnerability in the Snort 3 SMTP MIME Decoder that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to restart. This vulnerability is due to a lack of error checking when the MIME fields of the SMTP header are parsed.
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-2026-20221 MEDIUM 5.8
- CVE-2026-20019 MEDIUM 5.8