CVE-2026-21709 json
A vulnerability allowing a local attacker with administrator privileges to bypass Windows Driver Signature Enforcement.
published 6mo ago modified 14d ago also EUVD-2026-23438
- cvss
- 6.7
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 6%
- public exploits
- 0
- none known
Summary
A vulnerability allowing a local attacker with administrator privileges to bypass Windows Driver Signature Enforcement.
Patch / fix
- Veeam Backup and Replication 12.3.2
- Veeam Software Appliance 13.0.1
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 6mo ago
Exploit prediction
0.17% chance of exploitation in the next 30 days, higher than 6% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 6.7 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
| CNA | 3.1 | 6.7 | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Veeam Backup and Replication
- Veeam Software Appliance
Classification
- Weakness
-
- CWE-77 Improper Neutralization of Special Elements used in a Command
References
Sources
- CVE List CVE-2026-21709
- NVD CVE-2026-21709
Fencer Intel 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.