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CVE-2026-82457

su-exec through 0.3 Privilege Escalation via Numeric User ID

CVSS 4.0 8.5 HIGHCVSS 3.1 7.8 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-82457

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-82457

Published

su-exec

https://github.com/ncopa/su-exec

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "ncopa",
                    "product": "su-exec",
                    "collectionURL": "https://github.com/ncopa/su-exec",
                    "repo": "https://github.com/ncopa/su-exec",
                    "versions": [
                        {
                            "version": "0",
                            "lessThanOrEqual": "0.3",
                            "status": "affected",
                            "versionType": "custom"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }

Original source record · Cite this exact observation · Complete original publisher JSON