CVE-2023-0977: trellix agent Classic Buffer Overflow
CVSS: 6.7v3.1MediumModified
Published 03-04-2023Last modified 11-02-2025
Vulnerability summary
CVE-2023-0977 is a medium (CVSS 6.7) Classic Buffer Overflow vulnerability in trellix agent. EPSS estimates a 0.64% chance of exploitation in the next 30 days, higher than 49.5% of scored vulnerabilities.
CVSS score
6.7/10
010
Medium · v3.1 (CVE.org)EPSS score
0.64%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 03-04-2023PublishedVulnerability first disclosed.
- 11-02-2025Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
2 scores · 2 sources · 1 versionMedium 6.7Preferred score · CVE.org (CNA)
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HSources2 sources · 6.5–6.7
- NVDNIST6.5MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HDiffers
EPSS trend
Probability
0.64%
Chance of exploitation in the next 30 days
Percentile
50%
Versus all other CVEs
30-day change
0.00 pp
From 0.64% on 18-09-2026
18-09-202618-10-2026
EPSS score0.64%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.
- CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.
Affected systems
Trellix2 products
- agent≤ 5.7.8
- trellix agent5.7.8
1 vendor · 2 products
References
1 links- kcm.trellix.com/corporate/index?page=content&id=SB10396Vendor Advisory