CVE-2026-77102: CWE-122: Heap-based Buffer Overflow in Commvault Commvault Cloud
CommServe contained a heap-based buffer overflow issue affecting service availability. Software customers upgrade to resolved maintenance release. Update CommServe.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-77102) involves a heap-based buffer overflow in the CommServe component of Commvault Commvault Cloud. The flaw can lead to service availability issues. The affected versions explicitly include 11.36.0, 11.40.0, 11.44.0, and 11.46.0. The CVSS 4.0 base score is 8.7, indicating high severity, with network attack vector, no required privileges or user interaction, and high impact on availability. There is no vendor advisory or patch link provided, and the remediation level is not specified in the available data.
Potential Impact
The vulnerability can cause service availability disruption due to a heap-based buffer overflow in CommServe. This could potentially lead to denial of service conditions affecting the affected software versions.
Mitigation Recommendations
Customers should upgrade to a resolved maintenance release as recommended. However, the exact fixed version or patch details are not provided in the available data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
CVE-2026-77102: CWE-122: Heap-based Buffer Overflow in Commvault Commvault Cloud
Description
CommServe contained a heap-based buffer overflow issue affecting service availability. Software customers upgrade to resolved maintenance release. Update CommServe.
CVSS v4.0
Score 8.7high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-77102) involves a heap-based buffer overflow in the CommServe component of Commvault Commvault Cloud. The flaw can lead to service availability issues. The affected versions explicitly include 11.36.0, 11.40.0, 11.44.0, and 11.46.0. The CVSS 4.0 base score is 8.7, indicating high severity, with network attack vector, no required privileges or user interaction, and high impact on availability. There is no vendor advisory or patch link provided, and the remediation level is not specified in the available data.
Potential Impact
The vulnerability can cause service availability disruption due to a heap-based buffer overflow in CommServe. This could potentially lead to denial of service conditions affecting the affected software versions.
Mitigation Recommendations
Customers should upgrade to a resolved maintenance release as recommended. However, the exact fixed version or patch details are not provided in the available data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Commvault
- Date Reserved
- 2026-08-20T10:57:52.110Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6aa00199acd9273b49a6cf1c
Added to database: 09/08/2026, 12:37:45 UTC
Last enriched: 09/08/2026, 12:52:51 UTC
Last updated: 09/08/2026, 13:48:07 UTC
Views: 6
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.