CVE-2021-28480: microsoft exchange_server
CVSS: 10.0v2.0HighModified
Published 13-04-2021Last modified 03-08-2024
Vulnerability summary
CVE-2021-28480 is a high (CVSS 10.0) vulnerability in microsoft exchange_server. EPSS estimates a 71.23% chance of exploitation in the next 30 days, higher than 99.4% of scored vulnerabilities.
CVSS score
10.0/10
010
High · v2.0 (NVD)EPSS score
71.23%
0%100%
Critical · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 13-04-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
Microsoft Exchange Server Remote Code Execution Vulnerability
CVSS metrics
3 scores · 2 sources · 2 versionsCritical 9.8Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:CSourcesAll 2 agree
- NVDNIST9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
High 10.0Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:C/I:C/A:CSourcesSingle source
EPSS trend
Probability
71.23%
Chance of exploitation in the next 30 days
Percentile
99%
Versus all other CVEs
30-day change
0.00 pp
From 71.23% on 20-09-2026
20-09-202620-10-2026
EPSS score71.23%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Microsoft6 products
- exchange_server2013:cumulative_update_23 | 2016:cumulative_update_19 | 2016:cumulative_update_20 | 2019:cumulative_update_8 | 2019:cumulative_update_9
- microsoft exchange server 2013 cumulative update 23≥ 15.00.0, < 15.00.1497.015
- microsoft exchange server 2016 cumulative update 19≥ 15.01.0, < 15.01.2176.012
- microsoft exchange server 2016 cumulative update 20≥ 15.01.0, < 15.01.2242.008
- microsoft exchange server 2019 cumulative update 8≥ 15.02.0, < 15.02.0792.013
1 vendor · 6 products
References
1 links- portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-28480X Refsource MISCPatchVendor Advisory