How severe is CVE-2020-17135?

Medium severity. CVSS v3 base score is 6.4 out of 10.

Vulnerability in Microsoft Azure Devops Server

CVE-2020-17135

Azure DevOps Server Spoofing Vulnerability

Published 2020-12-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.013 (70.1th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 70.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

Microsoft Azure Devops Server — versions 2019, 2019.0.1
Microsoft Azure Devops Server 2019.0.1 — versions 2019.0.0
Microsoft Azure Devops Server 2019 Update 1.1 — versions 1.0

References

msrc.microsoft.com/update-guide/vulnerability/CVE-2020-17135 (vendor-advisory, patch)
af854a3a-2127-422b-91ae-364da2661108 (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2020-17135?: CVE-2020-17135 is a medium-severity vulnerability in Microsoft Azure Devops Server. CVSS score: 6.4/10. Published 2020-12-10.
How severe is CVE-2020-17135?: Medium severity. CVSS v3 base score is 6.4 out of 10.