CVE-2026-111138
MEDIUM
CVSS 5.5
Published: 2026-10-15
Modified: 2026-10-16
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Description
NetSurf libnsbmp through 0.1.7 contains an out-of-bounds read vulnerability in bmp_decode_rle8() and bmp_decode_rle4() because absolute-run bound checks omit the word-alignment pad byte. Attackers can supply a crafted RLE8 or RLE4 BMP ending on an odd-length absolute run to cause a one-byte heap over-read, crashing applications decoding untrusted images.
Quick Facts
| CVE ID | CVE-2026-111138 |
| CVSS Score | 5.5 |
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
| Published | 2026-10-15 |
| Exploited | No |
| CISA KEV | No |
| PoC | Not public |
References
- https://download.netsurf-browser.org/libs/releases/libnsbmp-…
- https://github.com/netsurf-browser/libnsbmp
- https://github.com/netsurf-browser/libnsbmp/blob/ea063c9f46a…
- https://github.com/netsurf-browser/libnsbmp/blob/ea063c9f46a…
- https://hackmd.io/@haind-pwn/libnsbmp-rle-absolute-pad-and-i…
- https://www.vulncheck.com/advisories/netsurf-libnsbmp-throug…