CVE-2026-117555: medium-severity vulnerability in GreycLab CImg
GreycLab CImg through 4.0.6 Heap Out-of-Bounds Read via Integer Overflow in _load_bmp()
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.9epss 0.1%
CImg through 4.0.6 contains a heap out-of-bounds read vulnerability in the _load_bmp() function of CImg.h caused by an integer overflow in the row byte count. Attackers can supply a crafted BMP file with a large header width that wraps dx_bytes, causing crashes or heap memory disclosure into the decoded image.
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
Affected products
GreycLab · CImgRelated CVEs — GreycLab CImg
In the same product, most dangerous first.
CVE-2026-47667HIGHCImg Library: Uncontrolled Memory Allocation and Memory Leak in `_load_analyze()` via Crafted NIfTI/Analyze HeaderEPSS 0.5%CVE-2026-42146MEDIUMCImg Library: Uncontrolled memory allocation via nb_colors field in _load_bmpEPSS 0.2%CVE-2026-42144MEDIUMCImg Library: Integer overflow in PNM size check bypasses memory guard (_load_pnm)EPSS 0.1%
References
https://github.com/GreycLab/CImghttps://github.com/GreycLab/CImg/blob/v.4.0.6/CImg.h#L55659https://github.com/GreycLab/CImg/commit/b9ed613d9984f9caa1617b97e1db7e429cf14fd5https://github.com/GreycLab/CImg/issues/495https://www.vulncheck.com/advisories/greyclab-cimg-through-4.0.6-heap-out-of-bounds-read-via-integer-overflow-in-load-bmp