CVE-2026-92240

A malicious or compromised IMAP server can trigger an out-of-bounds read in the IMAP response parser by sending an untagged ' ID' response, crashing Thunderbird. The affected parsing path is reachable before authentication. This vulnerability was fixed in Thunderbird 156, Thunderbird 140.16, and...

EUVD-2026-79244

A malicious or compromised IMAP server can trigger an out-of-bounds read in the IMAP response parser by sending an untagged ' ID' response, crashing Thunderbird. The affected parsing path is reachable before authentication. This vulnerability was fixed in Thunderbird 156 and Thunderbird 140.16...

PT-2026-92476

A malicious or compromised IMAP server can trigger an out-of-bounds read in the IMAP response parser by sending an untagged ' ID' response, crashing Thunderbird. The affected parsing path is reachable before authentication. This vulnerability was fixed in Thunderbird 156 and Thunderbird 140.16...

Security Vulnerabilities fixed in Thunderbird 140.16 — Mozilla

A maliciously constructed mail header could lead to multiple fields being parsed as one, or potential memory safety violations. A maliciously constructed IMAP line could cause an out-of-bounds buffer read. A malicious or compromised IMAP server can trigger an out-of-bounds read in the IMAP respon...

Security Vulnerabilities fixed in Thunderbird 156 — Mozilla

A maliciously constructed mail header could lead to multiple fields being parsed as one, or potential memory safety violations. A maliciously constructed IMAP line could cause an out-of-bounds buffer read. A malicious or compromised IMAP server can trigger an out-of-bounds read in the IMAP respon...

Oracle Linux 8 : dovecot (ELSA-2026-46532)

The remote Oracle Linux 8 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2026-46532 advisory. 1:2.3.16-8 - fix CVE-2026-42006: fix IMAP parser listcountlimit to correctly limit open braces instead of close braces RHEL-188480 Tenable has extracted the...

Oracle Linux 9 : dovecot (ELSA-2026-41905)

The remote Oracle Linux 9 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2026-41905 advisory. 1:2.3.16-18.1 - fix CVE-2026-42006: IMAP parser listcountlimit bypass via open parentheses RHEL-188468 Tenable has extracted the preceding description block...

Oracle Linux 10 : dovecot (ELSA-2026-41988)

The remote Oracle Linux 10 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2026-41988 advisory. 1:2.3.21-19.1 - fix CVE-2026-42006: fix imapparser listcountlimit to actually work RHEL-188477 Tenable has extracted the preceding description block directly...

dovecot security update

1:2.3.21-19.1 - fix CVE-2026-42006: fix imapparser listcountlimit to actually work RHEL-188477...

CLSA-2026-1778250885 dovecot: Fix of CVE-2026-27857

CVE-2026-27857: imap-login: limit IMAP parser open lists to prevent excessive memory usage...

MiracleLinux 7 : dovecot-2.2.36-3.el7.1 (AXSA:2019-4341:02)

The remote MiracleLinux 7 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2019-4341:02 advisory. dovecot: improper NULL byte handling in IMAP and ManageSieve protocol parsers leads to out of bounds writes CVE-2019-11500 Tenable has extracted the precedin...

CVE-2025-61600 Unbounded Memory Allocation in Stalwart IMAP parser

Stalwart is a mail and collaboration server. Versions 0.13.3 and below contain an unbounded memory allocation vulnerability in the IMAP protocol parser which allows remote attackers to exhaust server memory, potentially triggering the system's out-of-memory OOM killer and causing a denial of...

CVE-2025-61600 Unbounded Memory Allocation in Stalwart IMAP parser

Stalwart is a mail and collaboration server. Versions 0.13.3 and below contain an unbounded memory allocation vulnerability in the IMAP protocol parser which allows remote attackers to exhaust server memory, potentially triggering the system's out-of-memory OOM killer and causing a denial of...

PT-2025-40430

Name of the Vulnerable Software and Affected Versions Stalwart versions 0.13.3 and below Description Stalwart, a mail and collaboration server, has an issue where the IMAP protocol parser can allocate an unlimited amount of memory. This can allow a remote attacker to exhaust server memory,...