Medium severity6.1NVD Advisory· Published Oct 15, 2026· Updated Oct 15, 2026
CVE-2026-111146
CVE-2026-111146
Description
ytnef through 2.1.2 contains a heap out-of-bounds read vulnerability in MAPIPrint() that allows attackers to read past heap allocations by supplying compressed RTF properties. Attackers can deliver a crafted winmail.dat whose decompressed RTF lacks a NUL terminator, causing printf to over-read, crashing ytnefprint and leaking adjacent heap bytes.
Affected products
1Patches
Vulnerability mechanics
References
5- github.com/Yeraze/ytnef/blob/d9f089144414d3b0912c29ab96f8f1c591d00319/lib/ytnef.cnvd
- github.com/Yeraze/ytnef/blob/d9f089144414d3b0912c29ab96f8f1c591d00319/lib/ytnef.cnvd
- github.com/Yeraze/ytnef/issues/112nvd
- hackmd.io/@haind-pwn/ytnef-decompressrtf-oob-readnvd
- www.vulncheck.com/advisories/ytnef-through-2.1.2-heap-out-of-bounds-read-via-mapiprint-in-lib-ytnef-cnvd
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