How severe is CVE-2024-21683?

CVE-2024-21683 has a CVSS score of 8.8/10, rated HIGH. Immediate patching is strongly recommended.

Which packages are affected by CVE-2024-21683?

Affected package information for CVE-2024-21683 is not yet fully mapped. Check the official advisory links for details.

How do I fix CVE-2024-21683?

No fixed version has been published for CVE-2024-21683 yet. Monitor the advisory for updates, apply mitigations recommended by the vendor, and use O3 Security to track when a fix becomes available in your stack.

Is CVE-2024-21683 actively exploited in the wild?

Yes. There are 6 known exploit references for CVE-2024-21683, including 4 in-the-wild exploitations observed on GitHub and other sources. Treat this as actively exploitable and prioritize patching immediately. All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2024-21683?

CVE-2024-21683 has an EPSS (Exploit Prediction Scoring System) score of 94.1%, placing it in the 100th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. A score above 50% indicates significantly elevated exploitation risk — immediate patching is strongly recommended.

What type of vulnerability is CVE-2024-21683?

CVE-2024-21683 is classified as Code Injection (CWE-94). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

Which products and versions are affected by CVE-2024-21683?

CVE-2024-21683 affects atlassian confluence data center (4 versions, e.g. 8.7.1, 8.7.2, 8.8.0…); atlassian confluence server (4 versions, e.g. 8.7.1, 8.7.2, 8.8.0…); atlassian crucible; atlassian fisheye, and 3 more product(s). Check the affected-products list on this page against your deployed version to confirm exposure.

Is there exploit tooling available for CVE-2024-21683?

A Nuclei detection template exists for CVE-2024-21683, meaning automated scanners can fingerprint it. Public exploit tooling significantly increases real-world risk — prioritize patching and ensure detection coverage. Exploit tooling should only ever be used in isolated, authorized testing environments.

When was CVE-2024-21683 published, and has it been updated?

CVE-2024-21683 was published on May 21, 2024 and was last updated on May 12, 2025. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CVE-2024-21683

HIGH

This High severity RCE (Remote Code Execution) vulnerability was introduced in version 5.2 of Confluence Data Center and Server. This RCE (Remote Code Execution) vulnerability, with…

Published

May 21, 2024

Updated

May 12, 2025

Affected

0 pkgs

Patched

None yet

Exploits

6 known

EPSS Exploitation Probability

via FIRST.org ↗

94.1%probability of exploitation in next 30 days

Very High Risk100th percentile0.00%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Description

This High severity RCE (Remote Code Execution) vulnerability was introduced in version 5.2 of Confluence Data Center and Server.

This RCE (Remote Code Execution) vulnerability, with a CVSS Score of 7.2, allows an authenticated attacker to execute arbitrary code which has high impact to confidentiality, high impact to integrity, high impact to availability, and requires no user interaction.

Atlassian recommends that Confluence Data Center and Server customers upgrade to latest version. If you are unable to do so, upgrade your instance to one of the specified supported fixed versions. See the release notes https://confluence.atlassian.com/doc/confluence-release-notes-327.html

You can download the latest version of Confluence Data Center and Server from the download center https://www.atlassian.com/software/confluence/download-archives.

This vulnerability was found internally.

Affected Products

7 products · 40 configurations

Application

confluence data centeratlassian

≥ 8.9.0 && ≤ 8.6.2

4 versions

8.7.18.7.28.8.08.8.1

Application

confluence serveratlassian

≥ 8.9.0 && ≤ 8.9.2

4 versions

8.7.18.7.28.8.08.8.1

Application

crucibleatlassian

≥ 4.8.0 && < 4.8.15

range

Application

fisheyeatlassian

≥ 4.8.0 && < 4.8.15

range

Application

jira data centeratlassian

≥ 9.12.0 && < 9.12.8

range

Application

jira serveratlassian

≥ 9.12.0 && < 9.12.8

range

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Rejected reason: This CVE's publication may have been a false positive o…

github.comGithubMay 2024

Rejected reason: This CVE's publication may have been a false positive o…

github.comGithubMay 2024

Rejected reason: This CVE's publication may have been a false positive o…

github.comMetasploitJul 2024

Rejected reason: This CVE's publication may have been a false positive o…

github.comGithubNov 2024

Frequently Asked Questions

This High severity RCE (Remote Code Execution) vulnerability was introduced in version 5.2 of Confluence Data Center and Server. This RCE (Remote Code Execution) vulnerability, with a CVSS Score of 7.2, allows an authenticated attacker to execute arbitrary code which has high impact to confidentiality, high impact to integrity, high impact to availability, and requires no user interaction. Atlassian recommends that Confluence Data Center and Server customers upgrade to latest version. If you are unable to do so, upgrade your instance to one of the specified supported fixed versions. See the

O3 Security · Impact-Aware SCA

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