PoC Index

CVE-2021-3156

KEVHIGH 7.8EPSS 100.0%

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.

CVSS v3.1
7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v3.1
7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v2.0
7.2 HIGHAV:L/AC:L/Au:N/C:C/I:C/A:C
EPSS
99.97% chance of exploitation in the next 30 days, 100th percentile
CISA KEV
added 2022-04-06
Nuclei
high · CWE-193
Published
2021-01-26
Updated
2025-10-21

Proof-of-concept exploits (109)

Nuclei templates (1)

Metasploit modules (1)

ExploitDB entries (2)

Exploit collections (2)

References

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