CVE-2026-82457
su-exec <=0.3 numeric ID parsing bug allows local privilege escalation to root.
Is CVE-2026-82457 being exploited?
Not confirmed. CVE-2026-82457 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.12% probability of exploitation in the next 30 days.
How severe is CVE-2026-82457?
CVE-2026-82457 is rated High with a CVSS score of 8.5. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-82457?
Yes. A fix has been recorded for CVE-2026-82457. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-82457 affect?
CVE-2026-82457 affects su-exec <= 0.3, container images bundling su-exec, containers relying on su-exec setuid helper. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-82457?
Upgrade to patched su-exec or remove/replace it from images; rebuild container images.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Local attacker can supply oversized numeric UIDs/GIDs that truncate to zero, causing su-exec to execute target programs as root.
Patch when possible
- affected<= 0.3
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.