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CVE-2026-101203

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

MEDIUM
6.3
CVSS Score
Published: September 28, 2026 at 09:30 PM UTC
Updated: September 29, 2026 at 08:17 PM UTC
1 product affected across 1 vendorImage Viewer

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Severity
MEDIUM6.3
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (4)

VDB Entry
Source: cverecord
https://vuldb.com/vuln/411012
SignaturePermissions Required
Source: cverecord
https://vuldb.com/vuln/411012/cti
Third Party Advisory
Source: cverecord
https://vuldb.com/cve/CVE-2026-101203
Third Party Advisory
Source: cverecord
https://vuldb.com/submit/907575

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.3MEDIUMVulDB
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-787CWE-119

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