How severe is CVE-2026-21672?

CVE-2026-21672 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-21672 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-21672?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-21672 have an EU (EUVD) identifier?

Yes. CVE-2026-21672 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-11595.

When was CVE-2026-21672 published?

CVE-2026-21672 was published on 2026-03-12 and last updated on 2026-06-17.

CVE-2026-21672

CVE-2026-21672 is a high-severity vulnerability with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-538.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 0% (13th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-11595
Weakness: CWE-538
Published: 2026-03-12
Last modified: 2026-06-17

Description

A vulnerability allowing local privilege escalation on Windows-based Veeam Backup & Replication servers.

Frequently asked questions

What is CVE-2026-21672?: A vulnerability allowing local privilege escalation on Windows-based Veeam Backup & Replication servers.
How severe is CVE-2026-21672?: CVE-2026-21672 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-21672 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-21672?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-21672 have an EU (EUVD) identifier?: Yes. CVE-2026-21672 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-11595.
When was CVE-2026-21672 published?: CVE-2026-21672 was published on 2026-03-12 and last updated on 2026-06-17.

References

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