Out-of-bounds read in Tcpreplay - #VU142675
Published: August 15, 2026
Vulnerability identifier: #VU142675
CSH Severity: High
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose sensitive information and cause a denial of service.
The vulnerability exists due to out-of-bounds read in tcpliveplay when parsing a crafted pcap file. A remote attacker can trick the victim into opening a crafted pcap file to disclose sensitive information and cause a denial of service.
User interaction is required to supply the crafted pcap file to the tool. In one variant, over-read heap data is subsequently transmitted onto the live network.
Affected software
Tcpreplay
Fedora
tcpreplay
Fedora
tcpreplay
Remediation
Install security update from vendor's website.
Tcpreplay - update to 4.6.1
tcpreplay - addressed in versions 4.6.1-1.el8, 4.6.1-1.el9, 4.6.1-1.fc43, 4.6.1-1.fc44
tcpreplay - addressed in versions 4.6.1-1.el8, 4.6.1-1.el9, 4.6.1-1.fc43, 4.6.1-1.fc44