Use After Free Vulnerability in tcpreplay Tool by Appneta
CVE-2025-9386

4.8MEDIUM

Key Information:

Vendor

Appneta

Status
Tcpreplay
Vendor
CVE Published:
24 August 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-9386?

A local vulnerability has been identified in the appneta tcpreplay tool, specifically within the function get_l2len_protocol in the file get.c. This flaw can lead to use after free issues, allowing attackers to manipulate memory allocation. Given that the exploit has been publicly disclosed, users are highly encouraged to upgrade to version 4.5.2-beta3 to address this security concern and enhance system integrity.

Affected Version(s)

tcpreplay 4.5.0

tcpreplay 4.5.1

tcpreplay 4.5.2-beta3

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2025-9386 - Proof of Concept

References

https://vuldb.com/?id.321219
vdb-entrytechnical-description
https://vuldb.com/?ctiid.321219
signaturepermissions-required
https://vuldb.com/?submit.630498
third-party-advisory

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

HeureuxBuilding (VulDB User)
.
CVE-2025-9386 : Use After Free Vulnerability in tcpreplay Tool by Appneta