Vulnerability in Microsoft Exchange Server
CVE-2022-21979
Microsoft Exchange Server Information Disclosure Vulnerability
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.022 (81.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 81.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: -0.001
Affected products
- Microsoft Exchange Server — versions 2013, 2016, 2019
- Microsoft Exchange Server 2013 Cumulative Update 23 — versions 15.00.0
- Microsoft Exchange Server 2016 Cumulative Update 22 — versions 15.0.0
- Microsoft Exchange Server 2016 Cumulative Update 23 — versions 15.01.0
- Microsoft Exchange Server 2019 Cumulative Update 11 — versions 15.02.0
- Microsoft Exchange Server 2019 Cumulative Update 12 — versions 15.02.0
Public proof-of-concept exploits
References
- msrc.microsoft.com/update-guide/vulnerability/CVE-2022-21979 (vendor-advisory)
Frequently asked questions
- What is CVE-2022-21979?
- CVE-2022-21979 is a medium-severity vulnerability in Microsoft Exchange Server. CVSS score: 4.8/10. Published 2022-08-09.
- How severe is CVE-2022-21979?
- Medium severity. CVSS v3 base score is 4.8 out of 10.
- Is CVE-2022-21979 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.