CVE-2026-111138
Medium
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.
SeverityMedium
CVSS5.5
Exploit probability—
ProductNetsurf Libnsbmp
PublishedOct 15, 2026
First seenOct 15, 2026
Weakness typeCWE-125Out-of-bounds read
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| NetSurf libnsbmp | v ≤ 0.1.7 | — |
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