CVE-2026-111145
Medium
Description
ytnef through 2.1.2 contains a heap out-of-bounds read vulnerability in DecompressRTF() in lib/ytnef.c that never validates uncompressedSize for uncompressed RTF streams. Attackers can supply a crafted winmail.dat TNEF attachment with a malicious PT_BINARY MAPI property to crash ytnefprint or libytnef callers and leak adjacent heap memory.
SeverityMedium
CVSS6.1
Exploit probability—
ProductYeraze Ytnef
PublishedOct 15, 2026
First seenOct 15, 2026
Weakness typeCWE-125Out-of-bounds read
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Yeraze ytnef | v ≤ 2.1.2 | — |
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