CVE-2026-111146
MEDIUM
CVSS 6.1
Published: 2026-10-15
Modified: 2026-10-16
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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.
Quick Facts
| CVE ID | CVE-2026-111146 |
| CVSS Score | 6.1 |
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H |
| Published | 2026-10-15 |
| Exploited | No |
| CISA KEV | No |
| PoC | Not public |
References
- https://github.com/Yeraze/ytnef
- https://github.com/Yeraze/ytnef/blob/d9f089144414d3b0912c29a…
- https://github.com/Yeraze/ytnef/blob/d9f089144414d3b0912c29a…
- https://github.com/Yeraze/ytnef/issues/112
- https://hackmd.io/@haind-pwn/ytnef-decompressrtf-oob-read
- https://www.vulncheck.com/advisories/ytnef-through-2.1.2-hea…