CVE-2026-69786

CVE-2026-69786 is a heap-based buffer overflow (CWE-122) in the Windows Text Shaping component of Microsoft Windows. An unauthenticated attacker can trigger the flaw remotely over a network to execute arbitrary code in the context of the affected Windows process. The CVSS vector indicates no user interaction is required, though high attack complexity suggests exploitation requires nontrivial conditions. All Windows installations that include the Text Shaping engine are potentially affected, but Microsoft has not enumerated specific affected versions in the provided data. As of now, there are no public proofs of concept, the flaw is not in CISA's KEV, and EPSS assigns only a 0.7% probability of exploitation within 30 days.

What to do: Monitor Microsoft's security bulletin for the affected version ranges and apply the released patch promptly, prioritizing systems that expose network services capable of processing untrusted text or fonts. Until patched, limit exposure of such Windows hosts to untrusted network input where possible and verify patch applicability against your OS inventory once Microsoft lists exact versions.