CVE-2023-21565Network attack vector

Authenticated content spoofing via cross-site scripting

Published Jun 13, 2023 · Updated Jan 1, 2025

Cross-site scripting in Microsoft Azure DevOps Server allows remote authenticated users to read data and alter rendered page content. Microsoft identifies CWE-79 but has not published the affected component, attacker-controlled input, or faulty output-encoding operation. Network access with a low-privileged account is required; successful exploitation exposes data and permits limited content modification without interrupting service.

CVSS severity7.1
High
EPSS probability0.93%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in Microsoft Azure DevOps Server allows remote authenticated users to read data and alter rendered page content. Microsoft identifies CWE-79 but has not published the affected component, attacker-controlled input, or faulty output-encoding operation. Network access with a low-privileged account is required; successful exploitation exposes data and permits limited content modification without interrupting service.

The record

CVE
CVE-2023-21565
Published
Jun 13, 2023
Updated
Jan 1, 2025
Vendor
Microsoft
Product
Azure DevOps Server
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 13, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 1, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2020.1.0 <20230601.3
  2. Affected versionversion=2022.0.0 <20230602.5
  3. Affected versionversion=20230131.0 <20230602.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Microsoft · Azure DevOps Serverversion=2020.1.0 <20230601.3; version=2022.0.0 <20230602.5; version=20230131.0 <20230602.4

Published CVSS scores

7.1Microsoft CorporationCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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