Heap-based Buffer Overflow in tcpreplay Affects AppNeta Products
CVE-2025-9019

2.3LOW

Key Information:

Vendor

AppNeta

Status
Tcpreplay
Vendor
CVE Published:
15 August 2025

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2025-9019?

A vulnerability in tcpreplay version 4.5.1 has been identified, specifically within the mask_cidr6 function located in the cidr.c file of the tcpprep component. This flaw allows for potential heap-based buffer overflow due to inadequate validation of data processed by the application. Although an attacker can initiate the exploit remotely, the complexity of executing this attack remains significant, making successful exploitation challenging. The tcpreplay maintenance team confirmed that the issue is resolved in version 4.5.2-beta1, and interested parties are encouraged to upgrade to mitigate potential risks.

Affected Version(s)

tcpreplay 4.5.1

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-2025-9019 - Proof of Concept

References

https://vuldb.com/?id.320080
vdb-entrytechnical-description
https://vuldb.com/?ctiid.320080
signaturepermissions-required
https://vuldb.com/?submit.623635
third-party-advisory

CVSS V4

Score:
2.3
Severity:
LOW
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

nipc-cxd (VulDB User)
.
CVE-2025-9019 : Heap-based Buffer Overflow in tcpreplay Affects AppNeta Products