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CVE-2026-35535· NVD / CVE Program· CNA mitre

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

Noroxi assessment

Priority: Monitor (action score 31/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.17% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Sudo project Sudo 3e474c2f201484be83d994ae10a4e20e8c81bb69; azl3 sudo 1.9.17-1 on Azure Linux 3.0 1.9.17-2; cbl2 sudo 1.9.17-1 on CBL Mariner 2.0 1.9.17-2.

Low priority for now. Upgrade to Sudo project Sudo 3e474c2f201484be83d994ae10a4e20e8c81bb69; azl3 sudo 1.9.17-1 on Azure Linux 3.0 1.9.17-2; cbl2 sudo 1.9.17-1 on CBL Mariner 2.0 1.9.17-2 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

HighCVSS 7.8 · v3.1—No exploit Fix available
Published
Apr 2, 2026
Updated
Sep 1, 2026
EPSS
0.1% · 6th percentile

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
7.8
CNA · mitre
7.4
0.4 point gap

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-35535

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
sudo projectsudo
siemenssinec os
siemensruggedcom rst2428p

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • siemens sinec osbefore 4.0
  • sudo project sudobefore 1.9.17
  • sudo project sudo1.9.17

Versions reported by the vendor

Affected version ranges reported by the assigning authority (mitre). Independent of NVD's CPE analysis and usually ahead of it.

  • Sudo project Sudo

    • before 3e474c2f201484be83d994ae10a4e20e8c81bb69affected · git

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:10sudobefore 1.9.17-4.p2.el10_21.9.17-4.p2.el10_2
AlmaLinux:10sudobefore 1.9.15-10.p5.el10_11.9.15-10.p5.el10_1
AlmaLinux:10sudo-python-pluginbefore 1.9.15-10.p5.el10_11.9.15-10.p5.el10_1
AlmaLinux:10sudo-python-pluginbefore 1.9.17-4.p2.el10_21.9.17-4.p2.el10_2
AlmaLinux:8sudobefore 1.9.5p2-1.el8_10.51.9.5p2-1.el8_10.5
AlmaLinux:9sudobefore 1.9.17p2-3.el9_81.9.17p2-3.el9_8
AlmaLinux:9sudobefore 1.9.5p2-15.el9_71.9.5p2-15.el9_7
AlmaLinux:9sudo-python-pluginbefore 1.9.5p2-15.el9_71.9.5p2-15.el9_7
AlmaLinux:9sudo-python-pluginbefore 1.9.17p2-3.el9_81.9.17p2-3.el9_8
Debian:12sudobefore 1.9.13p3-1+deb12u41.9.13p3-1+deb12u4
Debian:13sudobefore 1.9.16p2-3+deb13u21.9.16p2-3+deb13u2
Debian:14sudobefore 1.9.17p2-51.9.17p2-5
openSUSE:Leap 16.0sudobefore 1.9.17p1-160000.3.11.9.17p1-160000.3.1
openSUSE:Tumbleweedsudobefore 1.9.17p2-2.11.9.17p2-2.1
Red Hat:enterprise_linux_eus:10.0sudobefore 0:1.9.15-8.p5.el10_0.30:1.9.15-8.p5.el10_0.3
Red Hat:enterprise_linux_eus:10.0sudo-debuginfobefore 0:1.9.15-8.p5.el10_0.30:1.9.15-8.p5.el10_0.3
Red Hat:enterprise_linux_eus:10.0sudo-debugsourcebefore 0:1.9.15-8.p5.el10_0.30:1.9.15-8.p5.el10_0.3
Red Hat:enterprise_linux_eus:10.0sudo-python-pluginbefore 0:1.9.15-8.p5.el10_0.30:1.9.15-8.p5.el10_0.3
Red Hat:enterprise_linux_eus:10.0sudo-python-plugin-debuginfobefore 0:1.9.15-8.p5.el10_0.30:1.9.15-8.p5.el10_0.3
Red Hat:enterprise_linux:10.1sudobefore 0:1.9.15-10.p5.el10_10:1.9.15-10.p5.el10_1
Red Hat:enterprise_linux:10.1sudo-debuginfobefore 0:1.9.15-10.p5.el10_10:1.9.15-10.p5.el10_1
Red Hat:enterprise_linux:10.1sudo-debugsourcebefore 0:1.9.15-10.p5.el10_10:1.9.15-10.p5.el10_1
Red Hat:enterprise_linux:10.1sudo-python-pluginbefore 0:1.9.15-10.p5.el10_10:1.9.15-10.p5.el10_1
Red Hat:enterprise_linux:10.1sudo-python-plugin-debuginfobefore 0:1.9.15-10.p5.el10_10:1.9.15-10.p5.el10_1

+64

Same product

sudo project: all records

Other highest-scoring records for the same primary product.

  • CVE-2021-3156Sudo before 1.9.5p2 contains an off-by-one error that can result in a heap-based buffer overflow, which allows privilege escalation to root KEV
    91Now
  • CVE-2025-32463Sudo before 1.9.17p1 allows local users to obtain root access because /etc/nsswitch.conf from a user-controlled directory is used with the -KEV
    78This week
  • CVE-2019-14287In Sudo before 1.8.28, an attacker with access to a Runas ALL sudoer account can bypass certain policy blacklists and session PAM modules, a
    54Plan

Published before and after this one in the same product

  • ← EarlierCVE-2023-42465Dec 22, 2023 · Sudo before 1.9.15 might allow row hammer attacks (for authentication bypass or privilege escalation) because application logic sometimes is
    28Monitor
  • ← EarlierCVE-2023-7090Dec 23, 2023 · Sudo: improper handling of ipa_hostname leads to privilege mismanagement
    35Monitor
  • ← EarlierCVE-2025-32462Jun 30, 2025 · Sudo before 1.9.17p1, when used with a sudoers file that specifies a host that is neither the current host nor ALL, allows listed users to e
    36Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Sudo project Sudo3e474c2f201484be83d994ae10a4e20e8c81bb69Vendor (CNA)
azl3 sudo 1.9.17-1 on Azure Linux 3.01.9.17-2 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 sudo 1.9.17-1 on CBL Mariner 2.01.9.17-2 · CBL-Mariner ReleasesMicrosoft (MSRC)
cbl2 sudo 1.9.17-1 on CBL-Mariner 2.01.9.17-2 · Release NotesMicrosoft (MSRC)
almalinux:sudo1.9.15-10.p5.el10_1 · AlmaLinux:10Package registry (OSV)
almalinux:sudo-python-plugin1.9.15-10.p5.el10_1 · AlmaLinux:10Package registry (OSV)
debian:sudo1.9.13p3-1+deb12u4 · Debian:12Package registry (OSV)
opensuse:sudo1.9.17p2-2.1 · openSUSE:TumbleweedPackage registry (OSV)
red hat:sudo0:1.9.15-10.p5.el10_1 · Red Hat:enterprise_linux:10.1Package registry (OSV)
red hat:sudo-debuginfo0:1.9.15-10.p5.el10_1 · Red Hat:enterprise_linux:10.1Package registry (OSV)
red hat:sudo-debugsource0:1.9.15-10.p5.el10_1 · Red Hat:enterprise_linux:10.1Package registry (OSV)
red hat:sudo-devel0:1.8.23-10.el7_9.5 · Red Hat:rhel_els:7Package registry (OSV)
red hat:sudo-logsrvd0:1.9.17-16.p2.1.hum1 · Red Hat:hummingbird:1Package registry (OSV)
red hat:sudo-python-plugin0:1.9.15-10.p5.el10_1 · Red Hat:enterprise_linux:10.1Package registry (OSV)
red hat:sudo-python-plugin-debuginfo0:1.9.15-10.p5.el10_1 · Red Hat:enterprise_linux:10.1Package registry (OSV)
rocky linux:sudo0:1.9.15-10.p5.el10_1 · Rocky Linux:10Package registry (OSV)
suse:sudo1.9.12p1-150500.7.16.1 · SUSE:Linux Enterprise Micro 5.5Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-271 · Privilege Dropping / Lowering Errors

CVSS vector

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

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (19 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records