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Fencer Intel
high 7.8

CVE-2026-82474 json

Sudo through 1.9.17p2 Intercept Policy Bypass via execveat

published 2mo ago modified 2mo ago also EUVD-2026-68130

cvss
7.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 9%
public exploits
0
none known

Summary

Sudo through 1.9.17p2 fails to apply intercept policy checks to the execveat system call in ptrace-based intercept mode. Users permitted to run specific commands can execute denied programs by calling execveat directly or through fexecve, bypassing policy enforcement and logging.

Patch / fix

  • sudo Ubuntu 24.04 LTS 1.9.15p5-3ubuntu5.24.04.3
  • sudo Ubuntu 26.04 LTS 1.9.17p2-1ubuntu3.1

ubuntu advisories UBUNTU-CVE-2026-82474

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • sudo RHEL 9 1.9.17p2-3.el9_8.1
  • sudo-python-plugin RHEL 9 1.9.17p2-3.el9_8.1
  • sudo RHEL 10.2 1.9.17-10.p2.el10_2.6
  • sudo-python-plugin RHEL 10.2 1.9.17-10.p2.el10_2.6
  • sudo hummingbird 1 1.9.17-16.p2.1.hum1
  • sudo-logsrvd hummingbird 1 1.9.17-16.p2.1.hum1
  • sudo-python-plugin hummingbird 1 1.9.17-16.p2.1.hum1
  • sudo enterprise linux eus 10.0 1.9.15-8.p5.el10_0.4

red hat advisories RHSA-2026:71354RHSA-2026:69123RHSA-2026:68692RHSA-2026:65569

  • sudo AlmaLinux 9 1.9.17p2-3.el9_8.1
  • sudo-python-plugin AlmaLinux 9 1.9.17p2-3.el9_8.1
  • sudo AlmaLinux 10 1.9.17-10.p2.el10_2.6
  • sudo-python-plugin AlmaLinux 10 1.9.17-10.p2.el10_2.6

almalinux advisories ALSA-2026:69123ALSA-2026:68692

  • sudo Rocky Linux 9 1.9.17p2-3.el9_8.1
  • sudo Rocky Linux 10 1.9.17-10.p2.el10_2.6

rocky linux advisories RLSA-2026:69123RLSA-2026:68692

  • sudo Azure Linux 3.0 1.9.17-3

azure linux advisories AZL-98225

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-82474 updated cvss 7.8

sudo: Sudo: Policy bypass allows unauthorized program execution via execveat

  • Red Hat Enterprise Linux AppStream (v. 9) sudo-python-plugin 1.9.17p2-3.el9_8.1
    fixed: vendor fix RHSA-2026:69123
  • Red Hat Enterprise Linux AppStream (v. 10) sudo-python-plugin 1.9.17-10.p2.el10_2.6
    fixed: vendor fix RHSA-2026:68692
  • Red Hat Enterprise Linux AppStream EUS (v. 10.0) sudo-python-plugin 1.9.15-8.p5.el10_0.4
    fixed: vendor fix RHSA-2026:71354
  • Red Hat Enterprise Linux BaseOS (v. 9) sudo 1.9.17p2-3.el9_8.1
    fixed: vendor fix RHSA-2026:69123
  • Red Hat Enterprise Linux BaseOS (v. 10) sudo 1.9.17-10.p2.el10_2.6
    fixed: vendor fix RHSA-2026:68692
  • Red Hat Enterprise Linux BaseOS EUS (v. 10.0) sudo 1.9.15-8.p5.el10_0.4
    fixed: vendor fix RHSA-2026:71354
  • Red Hat Hardened Images sudo 1.9.17-16.p2.1.hum1, sudo-logsrvd 1.9.17-16.p2.1.hum1, sudo-python-plugin 1.9.17-16.p2.1.hum1
    fixed: vendor fix RHSA-2026:65569
  • Red Hat Update Infrastructure 5 rhui5/rhua-rhel9 1790242004, rhui5/installer-rhel9 1790241922
    fixed: vendor fix RHSA-2026:71603
show 1 more
  • Red Hat Enterprise Linux 6 sudo Red Hat Enterprise Linux 7 sudo Red Hat Enterprise Linux 8 sudo Red Hat Update Infrastructure 5 rhui5/cds-rhel9 1790241954, rhui5/haproxy-rhel9 1790241900, rhui5/cds-kubernetes-rhel9 1790241897
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
2mo ago

Exploit prediction

0.19% chance of exploitation in the next 30 days, higher than 9% of all scored CVEs (FIRST EPSS, 2026-11-11).

CVSS scores

assigned by version score vector
CNA 4.0 8.5 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CNA 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA 4.0 8.5 CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Affected products

  • sudo-project sudo

Classification

Weakness
  • CWE-693 Protection Mechanism Failure

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.