Medium severity5.5NVD Advisory· Published Oct 15, 2026
CVE-2026-111139
CVE-2026-111139
Description
NetSurf libnsbmp through 0.1.7 contains an out-of-bounds read vulnerability in bmp_decode_mask() that allows attackers to read one byte past the image buffer by supplying crafted ICO files. Attackers can provide an ICO whose inner bitmap width is not a multiple of 8, causing a heap over-read that can crash applications calling bmp_decode().
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Affected products
1Patches
Vulnerability mechanics
References
4- download.netsurf-browser.org/libs/releases/libnsbmp-0.1.7-src.tar.gznvd
- github.com/netsurf-browser/libnsbmp/blob/ea063c9f46acb43e90208da14073332b505ef7e7/src/libnsbmp.cnvd
- hackmd.io/@haind-pwn/libnsbmp-rle-absolute-pad-and-ico-mask-oob-readnvd
- www.vulncheck.com/advisories/netsurf-libnsbmp-through-0.1.7-out-of-bounds-read-via-bmp-decode-masknvd
News mentions
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