Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Sudo Project | Sudo | < 1.9.17 |
| Siemens | Sinec Os | < 4.0 |
| Siemens | Ruggedcom Rst2428P | - |
Related Weaknesses (CWE)
References
- https://bugs.debian.org/1130593Broken Link
- https://bugs.launchpad.net/ubuntu/+source/sudo/+bug/2143042Issue Tracking
- https://github.com/sudo-project/sudo/commit/3e474c2f201484be83d994ae10a4e20e8c81Patch
- https://www.qualys.com/2026/03/10/crack-armor.txtThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2026/06/msg00003.html
- https://access.redhat.com/errata/RHSA-2026:10758
- https://access.redhat.com/errata/RHSA-2026:11521
- https://access.redhat.com/errata/RHSA-2026:12310
- https://access.redhat.com/errata/RHSA-2026:13731
- https://access.redhat.com/errata/RHSA-2026:13888
- https://access.redhat.com/errata/RHSA-2026:13889
- https://access.redhat.com/errata/RHSA-2026:13891
- https://access.redhat.com/errata/RHSA-2026:13892
- https://access.redhat.com/errata/RHSA-2026:13895
- https://access.redhat.com/errata/RHSA-2026:13896
FAQ
What is CVE-2026-35535?
CVE-2026-35535 is a vulnerability with a CVSS score of 7.4 (HIGH). 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.
How severe is CVE-2026-35535?
CVE-2026-35535 has been rated HIGH with a CVSS base score of 7.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-35535?
Check the references section above for vendor advisories and patch information. Affected products include: Sudo Project Sudo, Siemens Sinec Os, Siemens Ruggedcom Rst2428P.