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 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...

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 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...

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-2026-57229

A flaw was found in Suricata, a network Intrusion Detection System IDS, Intrusion Prevention System IPS, and Network Security Monitoring engine. The SMTP Simple Mail Transfer Protocol MIME Multipurpose Internet Mail Extensions parser does not fully reset its state when processing encapsulated...

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...

DEBIAN-CVE-2026-57229

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, the SMTP MIME parser in rust/src/mime/smtp.rs does not fully reset state when processing Content-Type: message/rfc822 encapsulation. An outer MIME part's...

CVE-2026-57229

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, the SMTP MIME parser in rust/src/mime/smtp.rs does not fully reset state when processing Content-Type: message/rfc822 encapsulation. An outer MIME part's...

CVE-2026-57229 Suricata smtp/mime: incomplete state reset allows detection bypass

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, the SMTP MIME parser in rust/src/mime/smtp.rs does not fully reset state when processing Content-Type: message/rfc822 encapsulation. An outer MIME part's...

CVE-2026-57229

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, the SMTP MIME parser in rust/src/mime/smtp.rs does not fully reset state when processing Content-Type: message/rfc822 encapsulation. An outer MIME part's...

CVE-2026-57229

Suricata's SMTP MIME parser (rust/src/mime/smtp.rs) in versions 8.0.0 through 8.0.6 fails to fully reset state when processing Content-Type: message/rfc822 encapsulation. An outer MIME part's filename or Content-Transfer-Encoding state leaks into the inner message, allowing a crafted email to byp...

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-2026-57229: Improper Initialization

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, the SMTP MIME parser in rust/src/mime/smtp.rs does not fully reset state when processing Content-Type: message/rfc822 encapsulation. An outer MIME part's...