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CVE-2026-35535

High

Description

In Sudo through 1.9.17p2 before 3e474c2, a failure of a setuid, setgid, or setgroups call, during a privilege drop before running the mailer, is not a fatal error and can lead to privilege escalation.

SeverityHigh
CVSS7.4
Exploit probability—
ProductSudo
PublishedApr 3, 2026
First seenApr 3, 2026
Weakness typeCWE-271CWE-271

How to fix

Update
  • sudo_project sudo1.9.17 or later
  • siemens sinec_os4.0 or later
Vendor advisories

Affected products

ProductAffected versionsFixed in
sudo_project sudov < 1.9.17, 1.9.171.9.17
siemens sinec_osv < 4.04.0

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