CVSS v3
7.8
HIGH
EPSS Score
92.5%
exploit probability
CISA KEV
Yes
known exploited
Exploitation
—
SSVC status
Sudo before 1.9.5p2 contains an off-by-one error that can result in a heap-based buffer overflow, which allows privilege escalation to root via "sudoedit -s" and a command-line argument that ends with a single backslash character.
Sudo before 1.9.5p2 contains an off-by-one error that can result in a heap-based buffer overflow, which allows privilege escalation to root via "sudoedit -s" and a command-line argument that ends with a single backslash character.
Yes. CVE-2021-3156 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 4/27/2022.
CVE-2021-3156 has a CVSS v3 base score of 7.8 (HIGH severity).
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Ranked by exploit probability (EPSS).