CVE-2022-26501: in the CISA KEV catalogue
Veeam Backup & Replication Remote Code Execution Vulnerability. CISA added CVE-2022-26501 to the Known Exploited Vulnerabilities catalogue on 2022-12-13 with a default due date of 2023-01-03. Known ransomware campaign use: Known. Forensic triage flag: No.
The Veeam Distribution Service in the Backup & Replication application allows unauthenticated users to access internal API functions. A remote attacker can send input to the internal API which may lead to uploading and executing of malicious code. (CISA description)
- Vendor / product
- Veeam Backup & Replication
- CWE
- CWE-306
- CISA required action
- Apply updates per vendor instructions.
- EPSS
- 4.1%, percentile 90 (scored 2026-11-03)
EPSS puts about 4.1 in 100 odds (4.1%) on exploitation activity being observed in the next 30 days. Its score is higher than or equal to that of 90% of scored CVEs. This is a model estimate about exploitation anywhere, not about your environment.
Vendor and reference links (from CISA)
Your own deadline under CISA BOD 26-04 depends on exposure, automatability and technical impact: work it out with the BOD 26-04 calculator.
Frequently asked questions
Is CVE-2022-26501 in the CISA KEV catalogue?
Yes. CISA added CVE-2022-26501 (Veeam Backup & Replication Remote Code Execution Vulnerability) to the Known Exploited Vulnerabilities catalogue on 2022-12-13. CISA's default due date for it is 2023-01-03.
Is CVE-2022-26501 used in ransomware attacks?
CISA marks known ransomware campaign use as Known for CVE-2022-26501.
What should I do about CVE-2022-26501?
CISA's required action: Apply updates per vendor instructions.
Sources
- CISA, Known Exploited Vulnerabilities Catalog (accessed 2026-11-03)
- FIRST, Exploit Prediction Scoring System (EPSS) (EPSS by FIRST; scores generated by Empirical Security)
- NVD record for CVE-2022-26501