What’s Vulnerable › Vulnerabilities

CVE-2021-21813

• 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

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 memcpy copying the path provided by the user into a staticly sized buffer without any length checks resulting in a stack-buffer overflow.

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-2021-21813 or the next vulnerability affects your stack