CVE-2026-101203 (GCVE-0-2026-101203)

Vulnerability from cvelistv5 – Published: 2026-09-28 21:30 – Updated: 2026-09-28 21:30 X_Freeware
VLAI
Title
FastStone Image Viewer 1bpp RLE Decoder out-of-bounds write
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.
Severity
5.3 (Medium)
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
6.3 (Medium)
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
6.3 (Medium)
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
CWE
Assigner
References
URL Tags
https://vuldb.com/vuln/411012 vdb-entry
https://vuldb.com/vuln/411012/cti signaturepermissions-required
https://vuldb.com/cve/CVE-2026-101203 third-party-advisory
https://vuldb.com/submit/907575 third-party-advisory
Impacted products
Vendor Product Version CPE status
FastStone Image Viewer Affected: 8.0
Affected: 8.1
Affected: 8.2
Affected: 8.3
    cpe:2.3:a:faststone:image_viewer:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
jonzab (VulDB User) VulDB CNA Team
Show details on NVD website
To clipboard 

{
  "containers": {
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        {
          "cpes": [
            "cpe:2.3:a:faststone:image_viewer:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "1bpp RLE Decoder"
          ],
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          "vendor": "FastStone",
          "versions": [
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              "version": "8.0"
            },
            {
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              "version": "8.1"
            },
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            },
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            }
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        }
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      "title": "FastStone Image Viewer 1bpp RLE Decoder out-of-bounds write",
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    "dateReserved": "2026-09-28T09:39:54.245Z",
    "dateUpdated": "2026-09-28T21:30:08.559Z",
    "state": "PUBLISHED"
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                ],
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                ],
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          }
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                "modifiedAttackRequirements": "NOT_DEFINED",
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}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.