VULNERABILITY INTELLIGENCE

CVE-2026-23554

CVSS score7.8 HIGH
EPSS probability0.13%
CISA KEVNot currently listed
Published2026-03-23
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Description

The Intel EPT paging code uses an optimization to defer flushing of any cached EPT state until the p2m lock is dropped, so that multiple modifications done under the same locked region only issue a single flush. Freeing of paging structures however is not deferred until the flushing is done, and can result in freed pages transiently being present in cached state. Such stale entries can point to memory ranges not owned by the guest, thus allowing access to unintended memory regions.

Weakness classification

  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-367

Primary references