CVE-2026-77089

Q: How do I fix CVE-2026-77089?

Upgrade commvault to 11.46.20 or later.

Q: Is CVE-2026-77089 being actively exploited?

Not that we know of. CVE-2026-77089 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.33% is the estimated probability that it will be exploited in the next 30 days. That is higher than 26% of all scored CVEs.

Q: How severe is CVE-2026-77089?

CVE-2026-77089 has a CVSS v3 base score of 9.8, rated critical. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2026-77089 affect?

Published advisories record a fix for commvault (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

CRITICAL

9.8

CVSS v3

NVD

Description

Command Center API contained an authentication bypass issue affecting privilege management. Software customers upgrade to resolved maintenance release. Update Command Center.

CWE-290

How to fix

Remediation Available

commvaultNVD

Affected:>= 11.46.0, < 11.46.20Fixed in:11.46.20CVE-2026-77089derived from NVD

Affected:>= 11.36.0, < 11.36.123Fixed in:11.36.123CVE-2026-77089derived from NVD

Affected:>= 11.44.0, < 11.44.20Fixed in:11.44.20CVE-2026-77089derived from NVD

Affected:>= 11.40.0, < 11.40.72Fixed in:11.40.72CVE-2026-77089derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

0.33%probability of exploitation in 30 days

26thpercentile

Low risk: more likely to be exploited than 26% of all known CVEs.

References

Vendor Advisory1

documentation.commvault.com

Related Vulnerabilities

Other CWE-290 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-4358	Critical	9.8	97%	KEV	-
CVE-2022-24112	Critical	9.8	96%	KEV	Fix
CVE-2022-23131	Critical	9.1	96%	KEV	-
CVE-2021-29441	High	8.6	88%	-	Fix
CVE-2019-1234	High	7.5	75%	-	-
CVE-2021-31195	Medium	6.5	74%	-	Fix

Common questions

How do I fix CVE-2026-77089?

Upgrade commvault to 11.46.20 or later.

Is CVE-2026-77089 being actively exploited?

Not that we know of. CVE-2026-77089 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.33% is the estimated probability that it will be exploited in the next 30 days. That is higher than 26% of all scored CVEs.

How severe is CVE-2026-77089?

CVE-2026-77089 has a CVSS v3 base score of 9.8, rated critical. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2026-77089 affect?

Published advisories record a fix for commvault (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2026-77089

Markdown

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-09-11.