su-exec through 0.3 fails to validate numeric user and group identifiers parsed with strtol before assigning to uid_t and gid_t, allowing truncation of out-of-range values to zero. Attackers can supply large numeric identifiers that truncate to root's identifier, causing su-exec to execute target programs with root privileges instead of intended unprivileged accounts.

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
ncopa su-exec unaffected
Version Status Constraints
0 affected ≤ 0.3

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

No data.

Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://gist.github.com/thesmartshadow/ed96e2a88643c34a247c9b7cf9e311be cve-icon cve-icon
https://github.com/ncopa/su-exec cve-icon cve-icon
https://github.com/ncopa/su-exec/blob/89c016e6e08749d583efdeda04b9f73e1218e253/su-exec.c cve-icon cve-icon
https://www.vulncheck.com/advisories/su-exec-through-0.3-privilege-escalation-via-numeric-user-id cve-icon cve-icon
History

Sat, 29 Aug 2026 14:00:00 +0000

Type Values Removed Values Added
Description su-exec through 0.3 fails to validate numeric user and group identifiers parsed with strtol before assigning to uid_t and gid_t, allowing truncation of out-of-range values to zero. Attackers can supply large numeric identifiers that truncate to root's identifier, causing su-exec to execute target programs with root privileges instead of intended unprivileged accounts.
Title su-exec through 0.3 Privilege Escalation via Numeric User ID
Weaknesses CWE-681
References
Metrics cvssV3_1

{'score': 7.8, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 8.5, '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'}

Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-08-29T13:47:58.176Z

Reserved: 2026-08-29T13:23:00.303Z

Link: CVE-2026-82457

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-29T14:16:38.910

Modified: 2026-08-29T14:16:38.910

Link: CVE-2026-82457

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-29T15:30:05Z

Weaknesses