FastStone Image Viewer 1bpp RLE Decoder out-of-bounds write
Published Sep 28, 2026
5.3
MEDIUMCVSS 4.0
EPSS 0.23%
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 products
-
- Version 8.0StatusaffectedConstraints-
- Version 8.1StatusaffectedConstraints-
- Version 8.2StatusaffectedConstraints-
- Version 8.3StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| FastStone | Image Viewer | n/a |
|
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
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
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:UR
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Sep 29, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
Score over time
Oct 2026- EPSS v5
Percentile over time
- EPSS v5
Table of values (2 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 0.23% (0.00231) | 12.69th | v5 (v2026.06.15) |
| Oct 1, 2026 | 0.23% (0.00231) | 12.65th | v5 (v2026.06.15) |
References (4)
- https://vuldb.com/cve/CVE-2026-101203 third-party-advisory
- https://vuldb.com/submit/907575 third-party-advisory
- https://vuldb.com/vuln/411012 vdb-entry
- https://vuldb.com/vuln/411012/cti signaturepermissions-required
| Link | Providers | Tags |
|---|---|---|
| https://vuldb.com/cve/CVE-2026-101203 | third-party-advisory | |
| https://vuldb.com/submit/907575 | third-party-advisory | |
| https://vuldb.com/vuln/411012 | vdb-entry | |
| https://vuldb.com/vuln/411012/cti | signaturepermissions-required |
Change history (0)
No recorded changes yet.