What’s Vulnerable › Vulnerabilities

CVE-2026-118752: FreeImage before 3.19.22 Heap Buffer Overflow via IFF/LBM PBM RLE Decoder

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-28 · updated 2026-10-28
• Weakness: CWE-787

Description

FreeImage (danoli3 fork) before 3.19.22 contains a heap buffer overflow vulnerability in the PBM RLE decoder of PluginIFF.cpp that lacks bounds checks on ByteRun1 runs. Attackers can supply a crafted IFF/LBM PBM file with runs straddling scanline ends to write up to 127 controlled bytes past the heap-allocated bitmap.

Affected products

• danoli3 FreeImage: before 3.19.22 — fixed in 3.19.22
• FreeImage: through 3.18.0

How to fix

Upgrade to a fixed version: danoli3 FreeImage 3.19.22. Check the vendor advisory for mitigations.

References

• https://github.com/danoli3/FreeImage
• https://github.com/danoli3/FreeImage/blob/3.19.21/Source/FreeImage/PluginIFF.cpp#L296-L324
• https://github.com/danoli3/FreeImage/commit/cf173c16354274dc8fb739dc395fc7f32efe7d45
• https://github.com/danoli3/FreeImage/commit/e1105d3b464b679f0525c6178d9ccf49d55cf712
• https://github.com/danoli3/FreeImage/issues/156
• https://github.com/danoli3/FreeImage/pull/161
• https://github.com/danoli3/FreeImage/releases/tag/3.19.22
• https://www.vulncheck.com/advisories/freeimage-before-3.19.22-heap-buffer-overflow-via-iff-lbm-pbm-rle-decoder

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