CVE-2026-82457

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.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

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

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-29 14:16

Updated : 2026-09-01 03:16

NVD link : CVE-2026-82457

Mitre link : CVE-2026-82457

CVE.ORG link : CVE-2026-82457

JSON object : View

Products Affected

No product.

CWE

CWE-681

Incorrect Conversion between Numeric Types

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