CVE Catalog
CVE-2026-83778
HighCVSS 8.8Exploitation Probability (EPSS)
Elevated risk0.81%
56th percentile - higher than 56% of all known CVEs
Summary
A heap-based buffer overflow in Microsoft Internet Messaging API allows an unauthorized attacker to execute code over a network.
Risk Assessment
An unauthenticated attacker could remotely execute arbitrary code, potentially leading to system takeover and data leakage.
Recommendation
Immediately apply security updates for Microsoft Internet Messaging API and restrict network access to this service.
Other vulnerabilities in Microsoft Internet Messaging API
Original NVD description (English source)
Heap-based buffer overflow in Microsoft Internet Messaging API allows an unauthorized attacker to execute code over a network.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS