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CVE-2026-55005

Status: AnalyzedHigh (8.8)—

Heap-based buffer overflow in Microsoft Exchange Server allows an authorized attacker to execute code over a network.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

🎯 ATT&CK techniques

How this vulnerability is exploited and what the attacker gains, in MITRE ATT&CK terms.

Buffer overflow remoto (CWE-122) en Exchange con PR:L requiere privilegios de red adyacente (T1210). Ejecución de código confirmada (T1059) y escalada potencial a administrador del servidor (T1068).

Inferred by our analysis agent from the official description, CVSS vector and CWE, and checked by a supervisor. May contain errors.

🛡️ ATT&CK mitigations that cover these techniques

Threat Intelligence ProgramPrivileged Account ManagementExecution PreventionDisable or Remove Feature or ProgramApplication Isolation and SandboxingExploit Protection

Affected technologies (2)

Microsoft — Exchange ServerMicrosoft — Exchange Server Subscription Edition

CWEs

References

Raw JSON (NVD)

Show
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          "options": [
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