Medium severity · published Apr 17, 2026
CVE-2026-21709
A vulnerability allowing a local attacker with administrator privileges to bypass Windows Driver Signature Enforcement
6.7
CVSS
0.2%
EPSS
No
On KEV
Description
A vulnerability allowing a local attacker with administrator privileges to bypass Windows Driver Signature Enforcement.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 6% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BR
Backup & Replication · Veeam
12 before 12.3.2 · source: vendor
SA
Software Appliance · Veeam
13 before 13.0.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-21709
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-21709
www.veeam.com
https://www.veeam.com/kb4830
www.veeam.com
https://www.veeam.com/kb4831
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