Skip to main content
No exploitation reportedFix available

CVE-2026-82474

Sudo through 1.9.17p2 Intercept Policy Bypass via execveat

No exploitation reported by the sources we read.

  • Published2026-08-29
  • WeaknessCWE-693

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

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.

Timeline

dates in UTC
  1. 2026-08-2917:17CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-82474?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-82474?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • sudoAlmaLinux:10all versions · fixed in 1.9.17-10.p2.el10_2.6and 1 other package
  • sudoAlmaLinux:9all versions · fixed in 1.9.17p2-3.el9_8.1and 1 other package

Vendor advisories

  • CVE-2026-82474 Red Hat Product Security110 products fixed

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

  • RHSA-2026:71603 Red Hat Product Security2 products fixed

    Red Hat Security Advisory: Red Hat Update Infrastructure 5.3 security update

  • RHSA-2026:71354 Red Hat Product Security33 products fixed

    Red Hat Security Advisory: sudo security update

  • RHSA-2026:69123 Red Hat Product Security33 products fixed

    Red Hat Security Advisory: sudo security update

  • RHSA-2026:68692 Red Hat Product Security33 products fixed

    Red Hat Security Advisory: sudo security, bug fix, and enhancement update

  • RHSA-2026:65569 Red Hat Product Security9 products fixed

    Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Full record on NVD

Fix

  1. Vendor fix Red Hat Product Security RHSA-2026:71603 · 2 productsThe container images provided by this release, apart from the installer, should be deployed using rhui-installer utility. See the official documentation for more details.
  2. Vendor fix Red Hat Product Security RHSA-2026:71354 · 33 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
  3. Vendor fix Red Hat Product Security RHSA-2026:65569 · 9 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/
  4. Workaround from the vendor Red Hat Product Security RHSA-2026:71603 · 5 productsTo mitigate this issue, disable the ptrace-based intercept mode in the `sudoers` configuration. Add `Defaults !intercept` to `/etc/sudoers` or a file within `/etc/sudoers.d/`. This action may affect advanced `sudo` policy enforcement or logging features that rely on ptrace-based interception. Alway…

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub

Sources

  • NVDCVE recordread 2026-10-23
  • CISA-ADPSSVC decisionnone2026-09-02
  • OpenCVESSVC decisionnone—
  • CNACVSS 4.08.5read 2026-10-23
  • CNACVSS 3.17.8read 2026-10-23
  • CNAweakness (CWE)CWE-693read 2026-10-23
  • FIRST EPSSEPSS score0.1 %2026-10-22
  • OSVaffected packages—

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 4.0 vector
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
Published
2026-08-29
Last Modified
2026-09-10
NVD status
Awaiting Analysis

Frequently asked questions

What is CVE-2026-82474?

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.

Is CVE-2026-82474 actively exploited?

Active exploitation of CVE-2026-82474 has not been confirmed. Its EPSS score was 0.1% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-82474?

CVE-2026-82474 has a CVSS v3 base score of 7.8 (HIGH severity), with vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Running sudo? Hear about its next vulnerability

Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

Get alerts for this productCISA KEV additions, October 2026Search CVEs

No credit card required · No monthly cap on website lookups · 250 API requests/month

Go further

Related vulnerabilities

Same product first, then the same vendor advisory and the same publication week.

Back to CVE Database