CVE-2026-111139

MediumCVSS 5.5/10Last modified Oct 26, 2026

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().

Metrics

CVSS 3.1 5.5/10CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-125

Affected software

Vendor	Product	Versions
NetSurf	libnsbmp	<= 0.1.7

References

Timeline

Published: Oct 15, 2026
Last modified: Oct 26, 2026
NVD status: Deferred

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