High 7.8Published Aug 29, 2026

CVE-2026-82457su-exec through 0.3 Privilege Escalation via Numeric User ID

Updated under an hour ago (2026-10-19 08:23 UTC)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for ncopa su-exec

Exploited in the last 30 days

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: 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-681
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Sep 24, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

ncopa su-exec ncopa:su_exec (from the name)	through 0.3	CNA record

References

https://github.com/ncopa/su-exec/blob/89c016e6e08749d583efdeda04b9f73e1218e253/su-exec.ctechnical-description
https://gist.github.com/thesmartshadow/ed96e2a88643c34a247c9b7cf9e311bethird-party-advisory
https://github.com/ncopa/su-execproduct
https://www.vulncheck.com/advisories/su-exec-through-0.3-privilege-escalation-via-numeric-user-idthird-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.