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TI-2026-65155 Aliases CVE-2026-101203GHSA-r4jh-4qvm-8mh5

FastStone Image Viewer 1bpp RLE Decoder out-of-bounds write

Priority LOW 24CWE-119Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
Low · Low · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

A vulnerability has been found in FastStone Image Viewer up to 8.3. The impacted element is an unknown function of the component 1bpp RLE Decoder. The manipulation leads to out-of-bounds write. The attack can be initiated remotely. The vendor was contacted early about this disclosure but did not respond in any way.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00231 14th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

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
FastStoneImage Viewer8.0; 8.1; 8.2; 8.3—No fix listedCNA
  • Image Viewer VendorFastStone Affected 8.0; 8.1; 8.2; 8.3 Fixed in — No fix listed CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:a:faststone:image_viewer:*:*:*:*:*:*:*:*——FastStone
  • cpe:2.3:a:faststone:image_viewer:*:*:*:*:*:*:*:* Versions — — ·FastStone

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-101203
  2. 2026-10-03 Alias added: GHSA-r4jh-4qvm-8mh5

References

—

  • TI-2026-80545 Out-of-bounds read in FastStone Image Viewer downsampler CVSS 4.0MEDIUM 5.3
  • TI-2007-01864 Integer overflow in FastStone Image Viewer 2.9 allows context-dependent attackers to… CVSS 2.0HIGH 9.3
  • TI-2022-17153 Unsafe Parsing of a PNG tRNS chunk in FastStone Image Viewer through 7.5 results in a stack buffer overflow. CVSS 3.1CRITICAL 9.8
  • TI-2021-08098 FastStone Image Viewer <= 7.5 is affected by a user mode write access violation at… CVSS 3.1HIGH 7.8
  • TI-2021-08097 FastStone Image Viewer v.<= 7.5 is affected by a Stack-based Buffer Overflow at… CVSS 3.1HIGH 7.8
  • TI-2024-08464 Out-of-bounds write in FastStone Image Viewer CVSS 3.1HIGH 7.8
See all 38 →

Sources

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