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PT-2026-63484

🗓️ 22 Jul 2026 00:00:00Reported by Positive TechnologiesType 
ptsecurity
 ptsecurity
🔗 dbugs.ptsecurity.com👁 20 Views

Off-by-one error in MIME header parsing during forwarding could read past the header buffer when viewing all headers, causing a Thunderbird crash; fixed in Thunderbird 153 and 140.13.

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27 Jul 2026 00:00Current
5.9Medium risk
Vulners AI Score5.9
CVSS 3.17.5 - 9.8
EPSS0.00436
SSVC
20