CVE-2026-117557

medium

Description

SDL_image through 3.4.8 and through 2.8.12 contains a stack out-of-bounds read vulnerability in IMG_LoadLBM_IO() in src/IMG_lbm.c that skips bitplane count validation when HAM mode is set. Attackers can supply a crafted ILBM file with more than 8 HAM bitplanes to read past the colormap stack array, causing crashes or disclosing stack memory.

References

https://www.vulncheck.com/advisories/sdl-image-through-3.4.8-and-2.8.12-stack-out-of-bounds-read-in-ilbm-loader

https://github.com/libsdl-org/SDL_image/issues/769

https://github.com/libsdl-org/SDL_image/commit/9c0622c36cf01e9ecba4bfdd6c4aa2b21c8cf996

https://github.com/libsdl-org/SDL_image/commit/5cfbe85f3a783417eec4d5aa0660b40c2cff5292

https://github.com/libsdl-org/SDL_image/blob/release-3.4.8/src/IMG_lbm.c#L240

https://github.com/libsdl-org/SDL_image

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-110835

Details

Source: Mitre, NVD

Published: 2026-10-27

Updated: 2026-10-27

Risk Information

CVSS v2

Base Score: 5.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 6.1

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

Severity: Medium

CVSS v4

Base Score: 6.9

Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N

Severity: Medium

EPSS

EPSS: 0.00129