CVE-2026-57239
Local privilege escalation via user-controlled executables leading to SYSTEM access.
Is CVE-2026-57239 being exploited?
Not confirmed. CVE-2026-57239 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 0.17% probability of exploitation in the next 30 days.
How severe is CVE-2026-57239?
CVE-2026-57239 is rated High with a CVSS score of 8.2. 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-2026-57239?
Yes. A fix has been recorded for CVE-2026-57239. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-57239 affect?
CVE-2026-57239 affects High-privilege processes/services that execute user-controllable executables (likely Windows OS contexts). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-57239?
Apply vendor patch when available; restrict writable dirs and run services with least privilege.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Local attackers can escalate to NT AUTHORITY\SYSTEM by causing high-privilege processes to execute user-controlled binaries.
Patch when possible
- affectedVersions 2026.1.1 and earlier
- affectedVersions 14.0.4 and earlier
- affectedVersions 13.2.4 and earlier
- affectedVersions 2026.1.1 and earlier
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.