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Heap buffer overflow in FreeImage GIF loading with GIF_PLAYBACK

Priority LOW 38CWE-787Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

FreeImage through 3.18.0 and the danoli3 FreeImage fork before 3.19.25 contain a heap buffer overflow in PluginGIF.cpp (CWE-787). A GIF frame whose left plus width exceeds the logical screen width is not clipped, so writes go past the canvas allocation. A local attacker can corrupt heap memory when a user loads a crafted GIF with GIF_PLAYBACK.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

Description from the CNA

FreeImage through 3.18.0 and the danoli3 FreeImage fork before 3.19.25 contain a heap buffer overflow vulnerability in PluginGIF.cpp that allows attackers to write past the canvas allocation via unclipped GIF frame rectangles. Attackers can craft a GIF whose frame left plus width exceeds the logical screen width, causing GifPlaybackCompositeFrame() and GifPlaybackFillRect() to corrupt heap memory when loaded with GIF_PLAYBACK.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00149 4th percentileScored 2026-11-07
Fix Fixed FreeImage (danoli3): 3.19.25

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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

Affected products

VendorProductAffected versionsFixed inStatusSource
danoli3FreeImagebefore 3.19.253.19.25Patch availableCNA
FreeImageFreeImageup to 3.18.0—No fix listedCNA
  • FreeImage Vendordanoli3 Affected before 3.19.25 Fixed in 3.19.25 Patch available CNA
  • FreeImage VendorFreeImage Affected up to 3.18.0 Fixed in — No fix listed CNA

Remediation

Update the danoli3 FreeImage fork to version 3.19.25. The sources list no fixed version for FreeImage.

Written with Claude Haiku 5.5 from the sources below · 2026-11-03

  • Fix · CNA FreeImage (danoli3) Fixed in 3.19.25

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-28 Threatist record created from CVE-2026-118753
  2. 2026-10-29 Alias added: GHSA-wr69-568q-rrqg
  3. 2026-10-30 Priority changed: MEDIUM → LOW
  4. 2026-10-30 Affected versions changed · Red Hat
  5. 2026-10-30 CVSS score added · Red Hat
  6. 2026-11-02 Title updated · CNA
  7. 2026-11-02 2 new references · CNA
  8. 2026-11-03 CISA SSVC decision points changed

References

  • TI-2026-82221 Heap buffer overflow in FreeImage IFF/LBM PBM decoder CVSS 4.0HIGH 8.5
  • TI-2026-74933 Heap out-of-bounds read in FreeImage PICT plugin CVSS 4.0MEDIUM 6.9

Sources