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thunderbird: Out of bounds read in IMAP parsing

🗓️ 15 Apr 2026 10:42:35Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 5 Views

Thunderbird IMAP parser may read out of bounds from negative lengths, risking crash or data leak.

Related
Packages
Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux8.8ppc64lethunderbird0:140.9.0-1.el8_8thunderbird-0:140.9.0-1.el8_8.ppc64le.rpm
Red Hat Enterprise Linux8.8x86_64thunderbird0:140.9.0-1.el8_8thunderbird-0:140.9.0-1.el8_8.x86_64.rpm
Red Hat Enterprise Linux8.8ppc64lethunderbird-debuginfo0:140.9.0-1.el8_8thunderbird-debuginfo-0:140.9.0-1.el8_8.ppc64le.rpm
Red Hat Enterprise Linux8.8x86_64thunderbird-debuginfo0:140.9.0-1.el8_8thunderbird-debuginfo-0:140.9.0-1.el8_8.x86_64.rpm
Red Hat Enterprise Linux8.8ppc64lethunderbird-debugsource0:140.9.0-1.el8_8thunderbird-debugsource-0:140.9.0-1.el8_8.ppc64le.rpm
Red Hat Enterprise Linux8.8x86_64thunderbird-debugsource0:140.9.0-1.el8_8thunderbird-debugsource-0:140.9.0-1.el8_8.x86_64.rpm

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30 Jun 2026 13:37Current
7.2High risk
Vulners AI Score7.2
CVSS 3.18.2
EPSS0.0036
SSVC
5