Vulnerability · Published Sep 23, 2025 · Assigned by mitre
CVE-2025-51005
High 7.5
In plain English
A high-severity heap buffer overflow in the tcpreplay package (Debian). Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 33% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.4%top 67.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | tcpreplay | no fix listed | DEBIAN-CVE-2025-51005 |
| Debian:13 | tcpreplay | no fix listed | DEBIAN-CVE-2025-51005 |
| Debian:14 | tcpreplay | no fix listed | DEBIAN-CVE-2025-51005 |
| Ubuntu:25.10 | tcpreplay | no fix listed | UBUNTU-CVE-2025-51005 |
| Ubuntu:26.04:LTS | tcpreplay | no fix listed | UBUNTU-CVE-2025-51005 |
| Ubuntu:26.10 | tcpreplay | no fix listed | UBUNTU-CVE-2025-51005 |
Affected products (as reported)
Weakness: CWE-122 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H