CVE-2026-82457CWE-681

CVE-2026-82457

High · published August 29, 2026

CVSS v3.1
7.8
EPSS
0%
Percentile
7.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
8.5 · 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
EPSS
0.00180 · 7.2th percentile
Weakness
CWE-681 · Incorrect Conversion between Numeric Types
Published
2026-08-29T18:16Z
References (5)
https://gist.github.com/thesmartshadow/ed96e2a88643c34a247c9b7cf9e311be · [email protected]https://github.com/ncopa/su-exec · [email protected]https://github.com/ncopa/su-exec/blob/89c016e6e08749d583efdeda04b9f73e1218e253/su-exec.c · [email protected]https://www.vulncheck.com/advisories/su-exec-through-0.3-privilege-escalation-via-numeric-user-id · [email protected]https://gist.github.com/thesmartshadow/ed96e2a88643c34a247c9b7cf9e311be · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 30 AUG 16:19Z
    EPSS moved — → 0%
    epss
  • 29 AUG 13:47Z
    su-exec through 0.3 Privilege Escalation via Numeric User ID
    cvelistv5