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8.4
CVE-2026-82474: Sudo lets users run blocked programs on Linux
CVE-2026-82474 · published 5 days ago
Summary
On Linux systems, the sudo tool up to version 1.9.17p2 can be tricked to run programs that administrators have said should be blocked. This means a user who is supposed to run only certain approved commands could start any other program without the usual warning or record, potentially creating a security risk. The fix is to upgrade sudo to a newer version and review who has sudo rights.
What to do
The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.
Affected software
| Ecosystem | Vendor | Product | Affected versions |
|---|---|---|---|
| Debian:14 | debian | sudo | All versions |
| – | sudo-project | sudo | <= 1.9.17p2 |
| Debian:11 | debian | sudo | All versions |
| Debian:12 | debian | sudo | All versions |
| Debian:13 | debian | sudo | All versions |
Original advisory text
Sudo through 1.9.17p2 Intercept Policy Bypass via execveat
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.
References
- https://github.com/sudo-project/sudo Product
- https://github.com/sudo-project/sudo/blob/v1.9.17p2/src/exec_ptrace.c Third Party Advisory
- https://github.com/sudo-project/sudo/commit/71fbe42dcd5a1c8f799540583a2dfb2ae622... Patch
- https://www.vulncheck.com/advisories/sudo-through-1.9-17p2-intercept-policy-bypa... Vendor Advisory
- https://security-tracker.debian.org/tracker/CVE-2026-82474 Vendor Advisory
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/82xxx/CVE-2026-82474... Vendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-82474 Vendor Advisory
Severity
8.4
High
CVSS 3.1: 7.8 (NVD)
CVSS 4.0: 8.5 (NVD)
CVSS 3.1: 7.8 (OSV)
CVSS 4.0: 8.4 (OSV)
Exploitation
EPSS <1%
Type
CWE-693Protection Mechanism Failure
Timeline
Published29 Aug 2026
Updated3 Sep 2026
First seen29 Aug 2026
Sources
CVE-2026-82474 · OSV
CVE-2026-82474 · NVD
CVE-2026-82474 · MITRE
DEBIAN-CVE-2026-82474 · OSV
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