CVE-2026-83778

CVSS 8.8 (high) · published 2026-10-13

Heap-based buffer overflow in Microsoft Internet Messaging API allows an unauthorized attacker to execute code over a network.

Weakness: CWE-122

Source: NVD CVE-2026-83778

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83778

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