Quick answers
- Is CVE-2026-30041 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-30041 being exploited in the wild.
- How severe is CVE-2026-30041?
- Informational severity, with a CVSS score of 7.8, published 26 June 2026.
- Which products and versions are affected?
- Faststone Image Viewer 8.3 and earlier.
- Is there a fix for CVE-2026-30041?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-30041 attacked?
- It is attacked with local access, in a network appliance.
- Am I affected by CVE-2026-30041?
- Check whether you run Faststone Image Viewer at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
An integer overflow vulnerability exists within the PSD file parser of FastStone Image Viewer (versions 8.3 and earlier). The flaw stems from insufficient validation of the 'height' value within PSD metadata, which leads to a heap-based buffer overflow during memory allocation and data processing. An attacker can exploit this by providing a maliciously crafted PSD file; if a user opens the file, the attacker may overwrite the instruction pointer (EIP) to achieve arbitrary code execution or cause the application to crash. As of the advisory date, the vendor has not released a patch, and users are advised to use restricted accounts and avoid opening untrusted PSD files.
Affected products
- FastStone Image Viewer 8.3 and earlier
Timeline
- 2026-05-12: other: Vendor notified
- 2026-06-22: disclosed: Vulnerability disclosed by CERT/CC
- 2026-06-26: advisory: CVE published in NVD