Azure DevOps Server Spoofing Vulnerability

published 2023-12-13 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-25918

cvss: 6.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.0%; EPSS 1.0% chance of exploitation in 30 days, percentile 62%
public exploits: 0; none known

Patch / fix

fixed in 1 links 1

Microsoft Azure DevOps Server 2020.1.2 20231127.4

msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21751 advisory

Exploit prediction

0.98% chance of exploitation in the next 30 days, higher than 62% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C
CNA	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Affected products

Microsoft Azure DevOps Server 2022
Microsoft Azure DevOps Server 2020.1.2

Classification

Weakness

CWE-284 Improper Access Control

References

msrc.microsoft.com /update-guide/vulnerability/CVE-2023-21751
vendor-advisory, patch

Sources

CVE List CVE-2023-21751
NVD CVE-2023-21751

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary