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CVE-2023-21564

23
FAUCET Score

CVE-2023-21564 is a Cross-Site Scripting (XSS) vulnerability affecting Microsoft Azure DevOps Server. With a CVSS score of 7.1 (HIGH), this vulnerability allows an authenticated attacker to execute arbitrary scripts in the context of the victim's browser, potentially leading to high confidentiality impact and low integrity impact. While there is no evidence of active exploitation, public exploit code, or KEV listing, the vulnerability has garnered some community discussion and media coverage. Organizations utilizing Azure DevOps Server should prioritize patching to mitigate this risk.

Impacted Technologies

VendorProductVersion(s)CPE
2022CPE matchmatch criteria
cpe:2.3:o:microsoft:azure_devops_server:2022:-:*:*:*:*:*:*
2022CPE matchmatch criteria
cpe:2.3:o:microsoft:azure_devops_server:2022:patch1:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.1HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
4.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.89%
Probability of exploitation in next 30 days
EPSS Percentile
55.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0089 is in the 51st percentile among its peer group of 17,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

microsoftpatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: Azure DevOps Server 2022Fixed in: 20230131.1
View patch

Vendor Advisories (1)

microsoft2023-Feb/CVE-2023-21564Important

Azure DevOps Server Cross-Site Scripting Vulnerability

Feb 14, 2023

References

msrc.microsoft.com / update-guide/vulnerability/CVE-2023-21564
PatchVendor Advisory