thunderbird: One byte overflow read in mail parser

A flaw was found in Thunderbird. A remote attacker could exploit this vulnerability by sending a maliciously constructed mail header. This could lead to a one-byte read past the end of a buffer, potentially resulting in information disclosure or other unpredictable behavior...

thunderbird: One byte overflow read in mail parser

A flaw was found in Thunderbird. A remote attacker could exploit this vulnerability by sending a maliciously constructed mail header. This could lead to a one-byte read past the end of a buffer, potentially resulting in information disclosure or other unpredictable behavior...

CVE-2026-84640

A flaw was found in Thunderbird. A remote attacker could exploit this vulnerability by sending a maliciously constructed mail header. This could lead to a one-byte read past the end of a buffer, potentially resulting in information disclosure or other unpredictable behavior...

CVE-2026-92238

A flaw was found in Thunderbird where a maliciously constructed mail header could lead to ambiguous parsing. This vulnerability could result in multiple mail header fields being incorrectly interpreted as one, or cause memory safety violations. A remote attacker could potentially exploit this to...

SUSE CVE-2026-92238

A maliciously constructed mail header could lead to multiple fields being parsed as one, or potential memory safety violations. This vulnerability was fixed in Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3...

Linux Distros Unpatched Vulnerability : CVE-2026-92238

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A maliciously constructed mail header could lead to multiple fields being parsed as one, or potential memory safety violations. This vulnerability was fixed in...

CVE-2026-92238

A maliciously constructed mail header could lead to multiple fields being parsed as one, or potential memory safety violations. This vulnerability was fixed in Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3...

DEBIAN-CVE-2026-92238

A maliciously constructed mail header could lead to multiple fields being parsed as one, or potential memory safety violations. This vulnerability was fixed in Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3...

CVE-2026-92238

A maliciously constructed mail header could lead to multiple fields being parsed as one, or potential memory safety violations. This vulnerability was fixed in Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3...

UBUNTU-CVE-2026-92238

A maliciously constructed mail header could lead to multiple fields being parsed as one, or potential memory safety violations. This vulnerability was fixed in Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3...

CVE-2026-92238

A maliciously constructed mail header in Mozilla Thunderbird could cause multiple fields to be parsed as one or lead to memory safety violations . This vulnerability has been addressed in Thunderbird versions 156 , 140.16 , and 153.3 . For Debian users, the issue is resolved in versions 1:140.16....

EUVD-2026-79242

A maliciously constructed mail header could lead to multiple fields being parsed as one, or potential memory safety violations. This vulnerability was fixed in Thunderbird 156 and Thunderbird 140.16...

CVE-2026-92238

A maliciously constructed mail header could lead to multiple fields being parsed as one, or potential memory safety violations. This vulnerability was fixed in Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3...

CVE-2026-92238 Ambiguous parsing of mail headers

A maliciously constructed mail header could lead to multiple fields being parsed as one, or potential memory safety violations. This vulnerability was fixed in Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3...

CVE-2026-92238

A maliciously constructed mail header could lead to multiple fields being parsed as one, or potential memory safety violations. This vulnerability was fixed in Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3...

PT-2026-92474

Name of the Vulnerable Software and Affected Versions Thunderbird versions prior to 140.16 Thunderbird versions prior to 153.3 Thunderbird versions prior to 156 Description A maliciously constructed mail header can cause multiple fields to be parsed as a single field or lead to memory safety...

CVE-2026-92238: Inconsistent Interpretation of HTTP Requests

A maliciously constructed mail header could lead to multiple fields being parsed as one, or potential memory safety violations. This vulnerability was fixed in Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3...

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...

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...

Linux Distros Unpatched Vulnerability : CVE-2026-84640

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A maliciously constructed mail header could lead to a one byte read past the end of a buffer. This vulnerability was fixed in Thunderbird 155, Thunderbird 140.1...