CVE-2020-35844
CVE-2020-35844 is a high-severity vulnerability in Faststone Image Viewer with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-787.
Key facts
- Severity: High (CVSS 3.x base score 7.8)
- CVSS v2: 6.8
- EPSS exploit prediction: 1% (56th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-787
- Affected product: Faststone Image Viewer
- Published:
- Last modified:
Description
FastStone Image Viewer 7.5 has an out-of-bounds write (via a crafted image file) at FSViewer.exe+0xbe9c4.
Frequently asked questions
- What is CVE-2020-35844?
- FastStone Image Viewer 7.5 has an out-of-bounds write (via a crafted image file) at FSViewer.exe+0xbe9c4.
- How severe is CVE-2020-35844?
- CVE-2020-35844 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2020-35844 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (56th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-35844?
- CVE-2020-35844 affects Faststone Image Viewer. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-35844?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2020-35844 published?
- CVE-2020-35844 was published on 2021-01-26 and last updated on 2026-06-17.
References
- https://github.com/DmitryMeD/pentesting/blob/main/FastStone%20Image%20Viewer%207.5.md
- https://twitter.com/DmitriyMelikov
Affected products (1)
- cpe:2.3:a:faststone:image_viewer:7.5:*:*:*:*:*:*:*
More vulnerabilities in Faststone Image Viewer
- CVE-2022-36947 — Critical (CVSS 9.8): Unsafe Parsing of a PNG tRNS chunk in FastStone Image Viewer through 7.5 results in a stack buffer overflow.
- CVE-2007-1942 — Critical (CVSS 9.3): Integer overflow in FastStone Image Viewer 2.9 allows context-dependent attackers to cause a denial of service and…
- CVE-2024-9114 — High (CVSS 7.8): FastStone Image Viewer GIF File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability…
- CVE-2024-9113 — High (CVSS 7.8): FastStone Image Viewer TGA File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability…
- CVE-2024-9112 — High (CVSS 7.8): FastStone Image Viewer PSD File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability…
- CVE-2021-26237 — High (CVSS 7.8): FastStone Image Viewer <= 7.5 is affected by a user mode write access violation at 0x00402d7d, triggered when a user…
All CVEs affecting Faststone Image Viewer →
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