CVE-2026-101203FastStone Image Viewer 1bpp RLE Decoder out-of-bounds write
Updated under an hour ago ()
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It affects FastStone Image Viewer. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 6.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
- Weakness (CWE)
- CWE-787, CWE-119
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulDB
- NVD analysis
- Deferred
- Record last updated
- Sep 29, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
FastStone Image Viewer faststone:image_viewer | 8.0; 8.1; 8.2; 8.3 | CNA record |
References
- https://vuldb.com/vuln/411012vdb-entry
- https://vuldb.com/vuln/411012/ctisignature, permissions-required
- https://vuldb.com/cve/CVE-2026-101203third-party-advisory
- https://vuldb.com/submit/907575third-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.