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TI-2026-30475 Aliases CVE-2026-42144

CImg Library: Integer overflow in PNM size check bypasses memory guard (_load_pnm)

Priority LOW 26CWE-190Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · Low · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

CImg Library is a C++ library for image processing. Prior to commit 4ca26bc, there is an integer overflow vulnerability in the W*H*D size computation inside _load_pnm() that can bypass the memory allocation guard. A crafted PNM/PGM/PPM file with large dimension values causes the overflow to wrap around, allocating an undersized buffer and potentially triggering a heap buffer overflow. Any application using CImg to load untrusted image files is affected. This issue has been patched via commit 4ca26bc.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00142 3rd percentileScored 2026-11-07
Fix Fixed CImg (GreycLab): 4ca26bce4d8c61fcd1507d5f9401b9fb1222c27d

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
GreycLabCImgbefore 4ca26bce4d8c61fcd1507d5f9401b9fb1222c27d4ca26bce4d8c61fcd1507d5f9401b9fb1222c27dPatch availableCNA
  • CImg VendorGreycLab Affected before 4ca26bce4d8c61fcd1507d5f9401b9fb1222c27d Fixed in 4ca26bce4d8c61fcd1507d5f9401b9fb1222c27d Patch available CNA

Remediation

  • Fix · CNA CImg (GreycLab) Fixed in 4ca26bce4d8c61fcd1507d5f9401b9fb1222c27d

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-42144

References

Other 4

  • TI-2026-35174 CImg Library: Uncontrolled Memory Allocation and Memory Leak in `_load_analyze()` via Crafted NIfTI/Analyze Header CVSS 3.1HIGH 7.5
  • TI-2026-30477 CImg Library: Uncontrolled memory allocation via nb_colors field in _load_bmp CVSS 3.1MEDIUM 5.5
  • TI-2026-81159 Heap out-of-bounds read in GreycLab CImg BMP loader CVSS 4.0MEDIUM 6.9

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences