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Case File

CVE-2021-26236

HIGH · CVSS 7.8 EPSS 1.97% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-03-18 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.8. Public exploit code or proof-of-concept references have been detected in its references.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit code execution
External Security References

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2021-26236
Severity
HIGH
CVSS
7.8
EPSS
1.97%

Original NVD Description

FastStone Image Viewer v.<= 7.5 is affected by a Stack-based Buffer Overflow at 0x005BDF49, affecting the CUR file parsing functionality (BITMAPINFOHEADER Structure, 'BitCount' file format field), that will end up corrupting the Structure Exception Handler (SEH). Attackers could exploit this issue to achieve code execution when a user opens or views a malformed/specially crafted CUR file.

Related CVEs

Other vulnerabilities affecting the same vendor(s)