CVE-2025-51005: broadcom tcpreplay Heap-based Buffer Overflow

Vulnerability summary

CVE-2025-51005 is a high (CVSS 7.5) Heap-based Buffer Overflow vulnerability in broadcom tcpreplay. EPSS estimates a 0.39% chance of exploitation in the next 30 days, higher than 31% of scored vulnerabilities. 2 public exploits are recorded.

Timeline

1. 23-09-2025
   PublishedVulnerability first disclosed.
2. 24-09-2025
   Last modifiedVulnerability information updated.

Description

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.

• CWE-122Heap-based Buffer OverflowA heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().