CVE-2026-35535

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.

Published: 2026-04-02 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-35535 is rated Low Risk (31.5/100): CVSS High severity, with low exploitation likelihood (EPSS 0.16%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-35535

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.00% 0.16% +0.15%
2 2026-04-03 — 0.00% —

Full EPSS history (2 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-35535

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.4 3.1 HIGH
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.4 5.9 [email protected]
7.8 3.1 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 1.8 5.9 [email protected]

Weakness enumeration for CVE-2026-35535

GitHub Security Advisory for CVE-2026-35535

GHSA-g5fc-f834-rcr2 · Severity: high — In Sudo through 1.9.17p2 before 3e474c2, a failure of a setuid, setgid, or setgroups call, during...

OS Trackers for CVE-2026-35535

vendor priority summary link
debian not yet assigned CVE-2026-35535 not yet assigned priority: Debian including 1 source packages (sudo), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2026-35535
redhat high — https://access.redhat.com/security/cve/CVE-2026-35535
suse high CVE-2026-35535 severity important: SUSE including 26 source package names (2.2.1-7.92:sudo-1.9.15p5-slfo.1.1_3.1, latest:sudo-1.9.15p5-slfo.1.1_3.1, …), 114 product×package rows across 50 product lines (Container suse/sl-micro/6.0/baremetal-os-container, Container suse/sl-micro/6.0/toolbox, … (50 product lines)): Fixed 105, Known Not Affected 9. https://www.suse.com/security/cve/CVE-2026-35535/
ubuntu high CVE-2026-35535 high priority: Ubuntu including 1 source packages (sudo), 8 status rows across 8 suites (bionic, focal, jammy, noble, questing, trusty, upstream, xenial): not-affected 4, released 4. https://ubuntu.com/security/CVE-2026-35535

Affected software / configurations for CVE-2026-35535

Vendor Product Version Raw CPE
sudo_project sudo < 1.9.17 cpe:2.3:a:sudo_project:sudo:*:*:*:*:*:*:*:*
sudo_project sudo 1.9.17 cpe:2.3:a:sudo_project:sudo:1.9.17:-:*:*:*:*:*:*
sudo_project sudo 1.9.17 cpe:2.3:a:sudo_project:sudo:1.9.17:p1:*:*:*:*:*:*
sudo_project sudo 1.9.17 cpe:2.3:a:sudo_project:sudo:1.9.17:p2:*:*:*:*:*:*
siemens sinec_os < 4.0 cpe:2.3:o:siemens:sinec_os:*:*:*:*:*:*:*:*

References for CVE-2026-35535

cvelogic Threat Intelligence