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CVE-2020-17144

Microsoft Exchange Remote Code Execution Vulnerability

CVSS 8.4 HIGHEPSS 36.5%● KEVCWE-502
Vexday Risk Score
83Fix now
SSVC decision (CISA)
Act
Exploitation + impact → act immediately
CVSS 8.4EPSS 36.5%KEV simPoC públicaNuclei Metasploit Patch referenciado
Lifecycle
09 Dec 2020Public PoC
09 Dec 2020Published on NVD
03 Nov 2021Active exploitation (CISA KEV)
Recommendation: Patch as soon as possible — active exploitation confirmed.
In short

Microsoft Exchange has a vulnerability that allows attackers to execute malicious code remotely on affected servers. An attacker can exploit this flaw to take full control of the email system and access sensitive data.

Technical detail

This vulnerability involves unsafe deserialization of untrusted data in Microsoft Exchange, allowing remote code execution without authentication. An attacker can send specially crafted requests to trigger arbitrary code execution with SYSTEM privileges, leading to complete server compromise.

Summary generated and translated by AI from the official description.
Microsoft Exchange Remote Code Execution Vulnerability
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

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