VULNERABILITY INTELLIGENCE

CVE-2026-64909

CVSS score7.8 HIGH
EPSS probability0.47%
CISA KEVNot currently listed
Published2026-08-11
Last modified2026-08-14
CVSS vectorCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Description

Integer underflow (wrap or wraparound) in Microsoft Office allows an unauthorized attacker to execute code locally.

Weakness classification

  • CWE-122: Heap-based Buffer Overflow
  • CWE-125: Out-of-bounds Read
  • CWE-191: Integer Underflow (Wrap or Wraparound)

Primary references