What’s Vulnerable › Vulnerabilities

CVE-2021-21812

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-08-13 · updated 2026-06-17
• Weakness: CWE-787

Description

A stack-based buffer overflow vulnerability exists in the command-line-parsing HandleFileArg functionality of AT&T Labs’ Xmill 0.7. Within the function HandleFileArg the argument filepattern is under control of the user who passes it in from the command line. filepattern is passed directly to strcpy copying the path provided by the user into a static sized buffer without any length checks resulting in a stack-buffer overflow. An attacker can provide malicious input to trigger these vulnerabilities.

Affected products

• Att Xmill: 0.7

References

• https://talosintelligence.com/vulnerability_reports/TALOS-2021-1280
• https://talosintelligence.com/vulnerability_reports/TALOS-2021-1280

Get alerted when CVE-2021-21812 or the next vulnerability affects your stack