CVE-2026-110247 (GCVE-0-2026-110247)

Vulnerability from cvelistv5 – Published: 2026-10-13 18:08 – Updated: 2026-10-13 18:10
VLAI
Title
Integer overflow in libmime buffer growth could lead to heap corruption
Summary
Several buffer-growth sites in libmime performed size arithmetic in 32-bit types without overflow checks. On a sufficiently large message the growth guard could fail open, or the buffer could be reallocated smaller than required, and a subsequent memcpy would then write attacker-controlled data across adjacent heap allocations. This vulnerability was fixed in Thunderbird 158.
Severity
No CVSS data available.
Assigner
mozilla CNA under the mitre root
CNA scorecard E 38/100 over 546 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Mozilla Thunderbird Unaffected: 158 , ≤ * (rpm)
guessed Create a notification for this product.
Credits
Ahmed Albalawi
Show details on NVD website
To clipboard 

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