CVE-2026-77103: Commvault CommServe Information Disclosure
This Commvault advisory covers CVE-2026-77103 in Commvault Cloud.
- CVE-2026-77103
Key facts
- Vendor rating
- High, CVSS 8.7
- CISA KEV
- Not listed (catalogue checked )
- Affected
- Affected Versions; 11.46.0 - 11.46.19; 11.44.0 - 11.44.19 and 2 more below
- Fixed in
- 11.46.20, 11.44.20, 11.40.72 and 1 more below
- Advisory id
- CV_2026_08_5
- Source published
- Source revised
- Listed by VulniPulse
Compiled by VulniPulse from the linked sources. How records are collected and checked.
Affected products & platforms
Description
CommServe contained an authentication bypass issue affecting access authorization and information disclosure. Software customers upgrade to resolved maintenance release.
Update CommServe.CVSS score: 8.7 Commvault Software To view version support lifecyle, see Commvault software releases, release types, and release tracks. Supported versions not listed are unaffected.
Unsupported versions must be upgraded.
Product Platforms Affected Versions Resolved Version Status Commvault Linux, Windows 11.46.0 - 11.46.19 11.46.20 and higher Resolved Commvault Linux, Windows 11.44.0 - 11.44.19 11.44.20 and higher Resolved Commvault Linux, Windows 11.40.0 - 11.40.71 11.40.72 and higher Resolved Commvault Linux, Windows 11.36.0 - 11.36.122 11.36.123 and higher Resolved
Affected product named by the advisory: Commvault Cloud.
Text from the source record.
- Affected Versions
- 11.46.0 - 11.46.19
- 11.44.0 - 11.44.19
- 11.40.0 - 11.40.71
- 11.36.0 - 11.36.122
Official advisory · high-confidence parse· fetched ·verify at source
How to fix CVE-2026-77103
Upgrade to a fixed release named by Commvault:
- 11.46.20
- 11.44.20
- 11.40.72
- 11.36.123
Vendor guidance
- Install the listed maintenance release (or a more recent one) for your feature release: 11.46.20, 11.44.20, 11.40.72, 11.36.123.
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Commvault advisories, September 2026All Commvault advisories
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