CVE-2022-26501: Veeam Backup & Replication Remote Code Execution Vulnerability
- Is it exploited?
Yes. CISA added it to the Known Exploited Vulnerabilities catalog on 13 Dec 2022, 271 days after the CVE record was published.
- How likely is exploitation in the next 30 days?
- 4.1%
EPSS score, percentile 90.7 of all scored records
- How severe?
- 9.8 Critical
CVSS v3.1 base score, from CISA's enrichment of the record
- What should I do?
CISA deadline 3 Jan 2023. Apply updates per vendor instructions.
The CVE record links no vendor advisory, patch or mitigation.
- Which versions are affected?
Not stated. The CVE record gives vendor and product as “n/a” and the version as “unspecified”.
Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of 28 Oct 2026; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.
What to do
Required action, set by CISA
Apply updates per vendor instructions.
CISA due date for this action: 3 January 2023.
Advisories and patches
The CVE record links no vendor advisory, patch or mitigation.
Linked from CISA's catalog entry
Affected products and versions
The CVE record does not name affected products or versions: vendor and product are “n/a” and the version is “unspecified”.
Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.
About this vulnerability
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.
Summary: CISA's KEV catalog, as of 28 Oct 2026.
- CISA added CVE-2022-26501 to its Known Exploited Vulnerabilities (KEV) catalog on 13 Dec 2022.
- CISA marks it as known to be used in ransomware campaigns.
- The due date CISA sets for the required action is 3 Jan 2023.
- The CVE record was published on 17 Mar 2022, 271 days before it was added to KEV.
- The CVE record carries a CVSS v3.1 base score of 9.8 (Critical), taken from CISA's enrichment of the record.
- FIRST's EPSS model puts the probability of exploitation in the next 30 days at 4.1% (percentile 90.7), as of 28 Oct 2026.
- CISA's SSVC assessment in the CVE record: exploitation active, automatable yes, technical impact total.
Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026. About the data.
Description
Veeam Backup & Replication 10.x and 11.x has Incorrect Access Control (issue 1 of 2).
Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.
Weakness
- CWE-306: Missing Authentication for Critical Function
CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record and the KEV entry.
Timeline
| Date | Event |
|---|---|
| 17 Mar 2022 | CVE record published |
| 13 Dec 2022 | Added to CISA KEV |
| 3 Jan 2023 | CISA due date for the required action |
| 21 Oct 2025 | CVE record last updated |
References
More exploited Veeam vulnerabilities
- CVE-2024-40711: Veeam Backup and Replication Deserialization Vulnerability
- CVE-2023-27532: Veeam Backup & Replication Cloud Connect Missing Authentication for Critical Function Vulnerability
- CVE-2022-26500: Veeam Backup & Replication Remote Code Execution Vulnerability