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cisco-sa-snort3-mime-vulns-tTL8PgVH — Multiple Cisco Products Snort 3 MIME Denial of Service Vulnerabilities

Multiple Cisco products are affected by vulnerabilities in the HTTP Multipurpose Internet Mail Extensions (MIME) Decoder that could allow an unauthenticated, remote attacker to cause the Snort 3 Detection Engine to leak possible sensitive information or to restart. For more information about these vulnerabilities, see the Details ["#details"] section of this advisory. Cisco has released software updates that address these vulnerabilities. There are no workarounds that address these vulnerabilities.

EUVD-2026-268226

fkie_cve-2025-20360

Multiple Cisco products are affected by a vulnerability in the Snort 3 HTTP 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 complete error checking when the MIME fields of the HTTP header are parsed. An attacker could exploit this vulnerability by sending crafted HTTP packets through an established connection to be parsed by Snort 3. A successful exploit could allow the attacker to cause a DoS condition when the Snort 3 Detection Engine unexpectedly restarts.

GHSA-6w3w-cx38-4j8c

Multiple Cisco products are affected by a vulnerability in the Snort 3 HTTP 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 complete error checking when the MIME fields of the HTTP header are parsed. An attacker could exploit this vulnerability by sending crafted HTTP packets through an established connection to be parsed by Snort 3. A successful exploit could allow the attacker to cause a DoS condition when the Snort 3 Detection Engine unexpectedly restarts.

WID-SEC-W-2025-2312 — Cisco Mehrere Produkte: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Cisco Secure Firewall Threat Defense, Cisco IOS XE, Cisco Meraki MX und Snort ausnutzen, um einen Denial of Service Angriff durchzuführen, und um Informationen offenzulegen.