Endpoint Security and HX
CVE-2023-0977: Heap-based overflow in Trellix Agent
A heap-based overflow vulnerability in Trellix Agent (Windows and Linux) version 5.7.8 and earlier, allows a remote user to alter the page heap in the macmnsvc process memory block resulting in the service becoming unavailable.
Published
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| Trellix Agent (Windows, Linux) 5.7.8 to 5.7.8 | Upgrade past 5.7.8 ; see the advisory |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
A heap-based overflow vulnerability in Trellix Agent (Windows and Linux) version 5.7.8 and earlier, allows a remote user to alter the page heap in the macmnsvc process memory block resulting in the service becoming unavailable.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 13 Oct 2026.