Quick answers
- Is CVE-2026-77103 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-77103 being exploited in the wild.
- How severe is CVE-2026-77103?
- High severity, with a CVSS score of 7.5, published 8 September 2026.
- Which products and versions are affected?
- Commvault CommServe 11.36.0-11.36.122, 11.40.0-11.40.71, 11.44.0-11.44.19, 11.46.0-11.46.19.
- Is there a fix for CVE-2026-77103?
- A patch was published on 2026-09-08: Resolved versions available: 11.36.123, 11.40.72, 11.44.20, 11.46.20 and higher Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-77103 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-77103?
- Check whether you run Commvault CommServe at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability is an authentication bypass issue in CommServe affecting access authorization and information disclosure. An attacker can exploit this flaw to bypass authentication mechanisms and gain unauthorized access to the system without valid credentials. The affected versions range from 11.36.0 to 11.46.19 across Linux and Windows platforms. Patches are available in versions 11.36.123, 11.40.72, 11.44.20, and 11.46.20 and higher. Users should upgrade to the resolved maintenance releases immediately.
Affected products
- Commvault CommServe 11.36.0-11.36.122, 11.40.0-11.40.71, 11.44.0-11.44.19, 11.46.0-11.46.19
Timeline
- 2026-09-08: disclosed: Commvault security advisory CV_2026_08_5 published
- 2026-09-08: patched: Resolved versions available: 11.36.123, 11.40.72, 11.44.20, 11.46.20 and higher