CVE-2026-21708 json
A vulnerability allowing a Backup Viewer to perform remote code execution (RCE) as the postgres user.
published 2026-03-12 7 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-11597
- cvss
- 9.9
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.4%
- EPSS 1.4% chance of exploitation in 30 days, percentile 72%
- public exploits
- 0
- none known
Summary
A vulnerability allowing a Backup Viewer to perform remote code execution (RCE) as the postgres user.
Patch / fix
- Veeam Backup and Replication 12.3.2, 13.0.1
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 7 mo ago
Exploit prediction
1.40% chance of exploitation in the next 30 days, higher than 72% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 9.9 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L |
| CNA | 3.1 | 9.9 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:L |
Affected products
- Veeam Backup and Replication
Classification
- Weakness
-
- CWE-89 Improper Neutralization of Special Elements used in an SQL Command
References
-
veeam.com
/kb4831
vendor-advisory
-
veeam.com
/kb4830
vendor-advisory
Sources
- CVE List CVE-2026-21708
- NVD CVE-2026-21708
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.