CVEvulnerability
CVE-2026-82457
8.5 HIGH
Official page ↗
- Status
- Deferred
- Published
- 2026-08-29
- Last modified
- 2026-09-23
- Assigner
- [email protected]
- CVSS 4.0 ([email protected])
- 8.5 HIGH — 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
- CVSS 3.1 ([email protected])
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-681
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.
Related
Weakness · CWE (1)
- CWE-681 Incorrect Conversion between Numeric Types weakness
References
- https://gist.github.com/thesmartshadow/ed96e2a88643c34a247c9b7cf9e311be gist.github.com
- https://github.com/ncopa/su-exec github.com
- https://github.com/ncopa/su-exec/blob/89c016e6e08749d583efdeda04b9f73e1218e253/su-exec.c github.com
- https://www.vulncheck.com/advisories/su-exec-through-0.3-privilege-escalation-via-numeric-user-id www.vulncheck.com
- https://gist.github.com/thesmartshadow/ed96e2a88643c34a247c9b7cf9e311be gist.github.com