How severe is CVE-2026-35535?

CVE-2026-35535 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over local access with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-35535 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-35535?

CVE-2026-35535 primarily affects Sudo Project Sudo. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-35535?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-35535 have an EU (EUVD) identifier?

Yes. CVE-2026-35535 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18571.

When was CVE-2026-35535 published?

CVE-2026-35535 was published on 2026-04-03 and last updated on 2026-07-02.

CVE-2026-35535

CVE-2026-35535 is a high-severity vulnerability in Sudo Project Sudo with a CVSS 3.x base score of 7.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-271.

Key facts

Severity: High (CVSS 3.x base score 7.4)
EPSS exploit prediction: 0% (7th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-18571
Weakness: CWE-271
Affected product: Sudo Project Sudo
Published: 2026-04-03
Last modified: 2026-07-02

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.

Frequently asked questions

What is 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.
How severe is CVE-2026-35535?: CVE-2026-35535 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over local access with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-35535 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (7th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-35535?: CVE-2026-35535 primarily affects Sudo Project Sudo. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-35535?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-35535 have an EU (EUVD) identifier?: Yes. CVE-2026-35535 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18571.
When was CVE-2026-35535 published?: CVE-2026-35535 was published on 2026-04-03 and last updated on 2026-07-02.

References

Affected products (5)

cpe:2.3:a:sudo_project:sudo:*:*:*:*:*:*:*:*
cpe:2.3:a:sudo_project:sudo:1.9.17:-:*:*:*:*:*:*
cpe:2.3:a:sudo_project:sudo:1.9.17:p1:*:*:*:*:*:*
cpe:2.3:a:sudo_project:sudo:1.9.17:p2:*:*:*:*:*:*
cpe:2.3:o:siemens:sinec_os:*:*:*:*:*:*:*:*

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