Deserialization in Microsoft Exchange_server
CVE-2020-17144
Microsoft Exchange Remote Code Execution Vulnerability
Vulnerability class: Insecure Deserialization
EPSS: 0.365 (98.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.4 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H.
Affected products
- Microsoft Exchange_server — versions 2010
- Microsoft Exchange Server 2010 Service Pack 3 Update Rollup 31 — versions 0
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply updates per vendor instructions.
Public proof-of-concept exploits
References
- secure@microsoft.com (vendor-advisory, Patch, patch, Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Patch, Vendor Advisory)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
Frequently asked questions
- What is CVE-2020-17144?
- CVE-2020-17144 is a high-severity vulnerability in Microsoft Exchange_server, classified under Deserialization of Untrusted Data. CVSS score: 8.4/10. Published 2020-12-10.
- How severe is CVE-2020-17144?
- High severity. CVSS v3 base score is 8.4 out of 10.
- Is CVE-2020-17144 known to be exploited?
- Yes. CVE-2020-17144 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 48 public proof-of-concept repositories are indexed.