CVE-2026-30040: n/a
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.
AI Analysis
Technical Summary
CVE-2026-30040 describes a heap overflow in the FSViewer.exe process of FastStone Image Viewer v8.3. An attacker can trigger this vulnerability by providing a crafted JPEG 2000 (JP2) file, potentially leading to arbitrary code execution within the context of the application process. No CVSS score or detailed vendor remediation information is available at this time. The vulnerability is publicly disclosed but lacks confirmed patch or mitigation details.
Potential Impact
Successful exploitation of this heap overflow vulnerability could allow an attacker to execute arbitrary code with the privileges of the user running FastStone Image Viewer. This could lead to compromise of the affected system or execution of malicious payloads. There are no known exploits in the wild currently.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or workaround has been documented. Users should monitor the vendor advisory and CERT link for updates and avoid opening untrusted JPEG 2000 files until a fix is available.
CVE-2026-30040: n/a
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.
CVSS v3.1
Score 6.5medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-30040 describes a heap overflow in the FSViewer.exe process of FastStone Image Viewer v8.3. An attacker can trigger this vulnerability by providing a crafted JPEG 2000 (JP2) file, potentially leading to arbitrary code execution within the context of the application process. No CVSS score or detailed vendor remediation information is available at this time. The vulnerability is publicly disclosed but lacks confirmed patch or mitigation details.
Potential Impact
Successful exploitation of this heap overflow vulnerability could allow an attacker to execute arbitrary code with the privileges of the user running FastStone Image Viewer. This could lead to compromise of the affected system or execution of malicious payloads. There are no known exploits in the wild currently.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or workaround has been documented. Users should monitor the vendor advisory and CERT link for updates and avoid opening untrusted JPEG 2000 files until a fix is available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-03-04T00:00:00.000Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
- Vendor Advisory Urls
- [{"url":"https://kb.cert.org/vuls/id/936962","vendor":"CERT"}]
Threat ID: 6a3e95a26e08203f7da558f1
Added to database: 06/26/2026, 15:07:14 UTC
Last enriched: 06/26/2026, 16:23:13 UTC
Last updated: 06/26/2026, 18:34:10 UTC
Views: 4
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