CVE-2020-17091: microsoft microsoft teams Code Injection
CVSS: 7.8v3.1HighModified
Published 11-11-2020Last modified 29-05-2026
Vulnerability summary
CVE-2020-17091 is a high (CVSS 7.8) Code Injection vulnerability in microsoft microsoft teams. EPSS estimates a 1.88% chance of exploitation in the next 30 days, higher than 79.1% of scored vulnerabilities.
CVSS score
7.8/10
010
High · v3.1 (CVE.org)EPSS score
1.88%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 11-11-2020PublishedVulnerability first disclosed.
- 29-05-2026Last modifiedVulnerability information updated.
Description
Microsoft Teams Remote Code Execution Vulnerability
CVSS metrics
3 scores · 2 sources · 2 versionsHigh 7.8Preferred score · CVE.org (CNA)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:CSourcesAll 2 agree
- NVDNIST7.8HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Medium 4.4Preferred score · NVD (NIST)
AV:L/AC:M/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
1.88%
Chance of exploitation in the next 30 days
Percentile
79%
Versus all other CVEs
30-day change
0.00 pp
From 1.88% on 19-09-2026
19-09-202619-10-2026
EPSS score1.88%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Microsoft2 products
- microsoft teamsN/A
- teamsna
1 vendor · 2 products
References
1 links
portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-17091X Refsource MISCPatchVendor Advisory