CVE-2024-21673Network attack vector

Authenticated remote code execution via undisclosed mechanism

Published Jan 16, 2024 · Updated Jun 3, 2025

Remote code execution in affected Atlassian Confluence Data Center and Server releases from 7.13.0 allows remote authenticated users to run code. Atlassian has not disclosed the affected component or the operation that mishandles input, so the code-level mechanism is unavailable. Exploitation requires authenticated high-privilege access and no user interaction; successful code execution can read or alter application data and interrupt the service.

CVSS severity8.0
High
EPSS probability1.50%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Remote code execution in affected Atlassian Confluence Data Center and Server releases from 7.13.0 allows remote authenticated users to run code. Atlassian has not disclosed the affected component or the operation that mishandles input, so the code-level mechanism is unavailable. Exploitation requires authenticated high-privilege access and no user interaction; successful code execution can read or alter application data and interrupt the service.

The record

CVE
CVE-2024-21673
Published
Jan 16, 2024
Updated
Jun 3, 2025
Vendor
Atlassian
Product
Confluence Data Center
Classifications
CWE-94
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 16, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 3, 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=0 <8.7.2
  2. Affected versionversion=>= 7.13.0
  3. Affected versionversion=>= 7.19.0
  4. Affected versionversion=>= 8.0.0
  5. Affected versionversion=>= 8.1.0
  6. Affected versionversion=>= 8.2.0
  7. Affected versionversion=>= 8.3.0
  8. Affected versionversion=>= 8.4.0
  9. Affected versionversion=>= 8.5.0
  10. Affected versionversion=>= 8.6.0
  11. Affected versionversion=>= 8.7.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Atlassian · Confluence Data Centerversion=0 <8.7.2; version=>= 7.13.0; version=>= 7.19.0; version=>= 8.0.0; version=>= 8.1.0; version=>= 8.2.0; version=>= 8.3.0; version=>= 8.4.0; version=>= 8.5.0; version=>= 8.6.0; version=>= 8.7.1
Atlassian · Confluence Serverversion=0 <8.7.1; version=>= 7.13.0; version=>= 7.19.0; version=>= 8.0.0; version=>= 8.1.0; version=>= 8.2.0; version=>= 8.3.0; version=>= 8.4.0; version=>= 8.5.0; version=>= 8.6.0; version=>= 8.7.1

Published CVSS scores

8.0AtlassianCVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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-94Improper Control of Generation of Code ('Code Injection')

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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