CVE-2023-4163: broadcom fabric_operating_system Classic Buffer Overflow
CVSS: 4.4v3.1MediumModified
Published 31-08-2023Last modified 26-06-2025
Vulnerability summary
CVE-2023-4163 is a medium (CVSS 4.4) Classic Buffer Overflow vulnerability in broadcom fabric_operating_system. EPSS estimates a 0.27% chance of exploitation in the next 30 days, higher than 17.8% of scored vulnerabilities.
CVSS score
4.4/10
010
Medium · v3.1 (CVE.org)EPSS score
0.27%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 31-08-2023PublishedVulnerability first disclosed.
- 26-06-2025Last modifiedVulnerability information updated.
Description
In Brocade Fabric OS before v9.2.0a, a local authenticated privileged user can trigger a buffer overflow condition, leading to a kernel panic with large input to buffers in the portcfgfportbuffers command.
CVSS metrics
2 scores · 2 sources · 1 versionMedium 4.4Preferred score · CVE.org (CNA)
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:HSourcesAll 2 agree
- NVDNIST4.4MediumCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
0.27%
Chance of exploitation in the next 30 days
Percentile
18%
Versus all other CVEs
30-day change
0.00 pp
From 0.27% on 20-09-2026
20-09-202620-10-2026
EPSS score0.27%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Broadcom1 product
- fabric_operating_system< 9.2.0a
Brocade1 product
- brocade fabric osFabric OS before v9.2.0a
2 vendors · 2 products
References
2 links- support.broadcom.com/web/…Vendor Advisory