CVE-2022-26134: Atlassian Confluence Server and Data Center Remote Code Execution Vulnerability
Atlassian Confluence Server and Data Center contain a remote code execution vulnerability that allows for an unauthenticated attacker to perform remote code execution.
| Vendor | Atlassian |
|---|---|
| Product | Confluence Server/Data Center |
| Date added to KEV | 2022-06-02 |
| Due date (BOD 22-01) | 2022-06-06 |
| Known ransomware campaign use | Known |
| CWE | CWE-917 |
| Required action | Immediately block all internet traffic to and from affected products AND apply the update per vendor instructions [https://confluence.atlassian.com/doc/confluence-security-advisory-2022-06-02-1130377146.html] OR remove the affected products by the due date on the right. Note: Once the update is successfully deployed, agencies can reassess the internet blocking rules. |
What to do
- Identify every instance of Atlassian Confluence Server/Data Center in your environment (asset inventory, EDR, vulnerability scanner).
- Apply CISA's required action: Immediately block all internet traffic to and from affected products AND apply the update per vendor instructions [https://confluence.atlassian.com/doc/confluence-security-advisory-2022-06-02-1130377146.html] OR remove the affected products by the due date on the right. Note: Once the update is successfully deployed, agencies can reassess the internet blocking rules.
- Federal civilian agencies must act by 2022-06-06 under BOD 22-01; other organizations can use the same date as a target.
- Because ransomware use is known, check for signs of compromise and confirm backups are offline and tested.
- Check the vendor advisory and NVD entry linked below for affected versions, then record the fix in your change log.
This CVE is flagged by CISA as known to be used in ransomware campaigns. Rehearse your response before you need it: Ransomware tabletop exercise kit (Runbook Foundry).
Sources
- NVD entry for CVE-2022-26134 (severity scores, if any, live there)
- CISA KEV catalog entry
- https://nvd.nist.gov/vuln/detail/CVE-2022-26134