CVE-2021-41617

sshd in OpenSSH 6.2 through 8.x before 8.8, when certain non-default configurations are used, allows privilege escalation because supplemental groups are not initialized as expected. Helper programs for AuthorizedKeysCommand and AuthorizedPrincipalsCommand may run with privileges associated with group memberships of the sshd process, if the configuration specifies running the command as a different user.

CVSS v3.1

7.0 HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v2.0

4.4 MEDIUMAV:L/AC:M/Au:N/C:P/I:P/A:P

EPSS

2.54% chance of exploitation in the next 30 days, 84th percentile

Published

2021-09-26

Updated

2026-07-14

Proof-of-concept exploits (1)

• AdnanApriliyansyahh/CVE-2021-416172★ · 2025-09-02

References

• CVE Record
• NVD entry

Related

• CVE-2022-1592
• CVE-2021-41612
• CVE-2021-4162
• CVE-2021-41579
• CVE-2021-41634
• CVE-2021-41569