CVE-2026-30040
MEDIUMCVSS 6.5/10
Last modified
CVE-2026-30040 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. A heap overflow in the FSViewer.exe process of FastStone Image Viewer v8.3 allows attackers to cause a execute arbitrary code in the context of the current process via supplying a crafted JPEG 2000 (JP2) file..
Description
A heap overflow in the FSViewer.exe process of FastStone Image Viewer v8.3 allows attackers to cause a execute arbitrary code in the context of the current process via supplying a crafted JPEG 2000 (JP2) file.
Metrics
Weakness Enumeration
References
Timeline
- Published
- Last Modified
- Status
- Deferred
Frequently Asked Questions
What is CVE-2026-30040?
A heap overflow in the FSViewer.exe process of FastStone Image Viewer v8.3 allows attackers to cause a execute arbitrary code in the context of the current process via supplying a crafted JPEG 2000 (JP2) file.
How severe is CVE-2026-30040?
CVE-2026-30040 has a CVSS score of 6.5/10 (MEDIUM severity).
How do I fix CVE-2026-30040?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-30006XnSoft NConvert 7.230 is vulnerable to Stack Buffer Overrun …6.2
- CVE-2026-30007XnSoft NConvert 7.230 is vulnerable to Use-After-Free via a …6.2
- CVE-2026-3001The Gutenverse plugin for WordPress is vulnerable to Reflect…6.1
- CVE-2026-3002The Gutenverse – Ultimate WordPress FSE Blocks Addons & Ecos…6.4
- CVE-2026-3003The Vagaro Booking Widget plugin for WordPress is vulnerable…7.2
- CVE-2026-3004The Snow Monkey Blocks plugin for WordPress is vulnerable to…6.4
- CVE-2026-30041An integer overflow in the PSD parser compnent of FastStone …7.5
- CVE-2026-30045An integer overflow in the /nnrf-disc/v1/nf-instances compon…7.5
- CVE-2026-30046A reachable assertion vulnerability in the NUDM-UECM interfa…7.5
- CVE-2026-30047A reachable assertion vulnerability in the /nsmf-pdusession/…7.5
- CVE-2026-30048A stored cross-site scripting (XSS) vulnerability exists in …5.4
- CVE-2026-3005The List category posts plugin for WordPress is vulnerable t…6.4
Are you affected by CVE-2026-30040?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST