CVE-2026-77105

Q: How do I fix CVE-2026-77105?

Upgrade commvault to 11.44.20 or later.

Q: Is CVE-2026-77105 being actively exploited?

Not that we know of. CVE-2026-77105 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.18% is the estimated probability that it will be exploited in the next 30 days. That is higher than 7% of all scored CVEs.

Q: How severe is CVE-2026-77105?

CVE-2026-77105 has a CVSS v3 base score of 8.8, rated high. 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-2026-77105 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.

HIGH

8.8

CVSS v3

NVD

Description

CommServe contained a cryptographic signature verification issue affecting privilege management. Software customers upgrade to resolved maintenance release. Update CommServe and Web Server.

CWE-347

How to fix

Remediation Available

commvaultNVD

Affected:>= 11.44.0, < 11.44.20Fixed in:11.44.20CVE-2026-77105derived from NVD

Affected:>= 11.40.0, < 11.40.72Fixed in:11.40.72CVE-2026-77105derived from NVD

Affected:>= 11.36.0, < 11.36.123Fixed in:11.36.123CVE-2026-77105derived from NVD

Affected:>= 11.46.0, < 11.46.20Fixed in:11.46.20CVE-2026-77105derived 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 RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.18%probability of exploitation in 30 days

7thpercentile

Low risk: more likely to be exploited than 7% of all known CVEs.

References

Vendor Advisory1

documentation.commvault.com

Related Vulnerabilities

Other CWE-347 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2018-16042	Medium	6.5	82%	-	-
CVE-2025-59718	Critical	9.8	68%	KEV	Fix
CVE-2025-25292	Critical	9.8	65%	-	Fix
CVE-2026-48558	Critical	10.0	64%	KEV	Fix
CVE-2021-22160	Critical	9.8	53%	-	Fix
CVE-2013-3900	Medium	5.5	45%	KEV	-

Common questions

How do I fix CVE-2026-77105?

Upgrade commvault to 11.44.20 or later.

Is CVE-2026-77105 being actively exploited?

Not that we know of. CVE-2026-77105 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.18% is the estimated probability that it will be exploited in the next 30 days. That is higher than 7% of all scored CVEs.

How severe is CVE-2026-77105?

CVE-2026-77105 has a CVSS v3 base score of 8.8, rated high. 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-2026-77105 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-2026-77105

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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 2026-09-09.