CVE-2026-20011

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...

CVE-2026-20011

Multiple Cisco products are vulnerable to a Denial of Service (DoS) condition due to a flaw in the Snort 3 SMTP MIME Decoder . The root cause is a lack of error checking when parsing MIME fields within the SMTP header. An unauthenticated, remote attacker can exploit this by sending crafted SMTP p...

EUVD-2026-107370

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...

CVE-2026-20011 Multiple Cisco Products Snort 3 SMTP MIME Denial of Service Vulnerability

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...

CVE-2026-20011 Multiple Cisco Products Snort 3 SMTP MIME Denial of Service Vulnerability

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...

Multiple Cisco Products Snort 3 SMTP MIME Denial of Service Vulnerability

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...

Cisco FTD: CVE-2026-20011: Multiple Cisco Products Snort 3 SMTP MIME Denial of Service Vulnerability

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...

PT-2026-120679

Name of the Vulnerable Software and Affected Versions Cisco products affected versions not specified Description A flaw exists in the Snort 3 SMTP MIME Decoder due to insufficient error checking during the parsing of MIME fields within the SMTP header. An unauthenticated remote attacker can explo...

Multiple Cisco Products Snort 3 SMTP MIME DoS (cisco-sa-snort3-mime-vulns-bkXjcKkt)

According to its self-reported version, Cisco ASA Software is affected by a vulnerability. - 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...

Cisco Open Source Snort3 buffer error vulnerability

Cisco Open Source Snort3 contains a buffer error vulnerability. This vulnerability stems from the lack of error checking in the Snort 3 SMTP MIME Decoder when parsing the SMTP header’s MIME field. As a result, unauthenticated remote attackers can send specially crafted SMTP packets over an...

CVE-2026-57228

A flaw was found in Suricata. A heap out-of-bounds read vulnerability exists in the SMTP MIME quoted-printable decoder. A remote attacker can send specially crafted SMTP traffic, causing a quoted-printable escape sequence to be split across traffic chunks. This can lead to a one-byte read past a...

SUSE CVE-2026-57228

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 7.0.13 until 7.0.17, the SMTP MIME quoted-printable decoder in src/util-decode-mime.c can read one byte past a heap buffer when a quoted-printable escape sequence is split...

CVE-2026-57228: Out-of-bounds Read

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 7.0.13 until 7.0.17, the SMTP MIME quoted-printable decoder in src/util-decode-mime.c can read one byte past a heap buffer when a quoted-printable escape sequence is split...