Buffer overflow in Broadcom Tcpreplay
CVE-2025-51005
A heap-buffer-overflow vulnerability exists in the tcpliveplay utility of the tcpreplay-4.5.1. When a crafted pcap file is processed, the program incorrectly handles memory in the checksum calculation logic at do_checksum_math_liveplay in tcpliveplay.c, leading to a possible denial of service.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.004 (30.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 30.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Broadcom Tcpreplay — versions 4.5.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/appneta/tcpreplay/issues/925 (Exploit, Issue Tracking, Vendor Advisory)
- github.com/sy460129/CVE-2025-51005 (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-51005?
- CVE-2025-51005 is a high-severity vulnerability in Broadcom Tcpreplay, classified under Heap-based Buffer Overflow. CVSS score: 7.5/10. Published 2025-09-23.
- How severe is CVE-2025-51005?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2025-51005 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.