Heap-based Buffer Overflow in PcapPlusPlus by Seladb
CVE-2026-13590

6.3MEDIUM

Key Information:

Vendor

Seladb

Status
Pcapplusplus
Vendor
CVE Published:
29 June 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-13590?

A security flaw has been identified in PcapPlusPlus version 25.05, specifically in the Modbus Protocol Handler's function pcpp::ModbusLayer::getLength. This vulnerability results from improper handling of the length argument, which can lead to a heap-based buffer overflow. Attackers may exploit this issue remotely, though the complexity involved in executing the exploit remains high. A patch has been issued to mitigate the risk associated with this vulnerability, and users are strongly advised to apply it to enhance their security posture.

Affected Version(s)

PcapPlusPlus 25.05

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-2026-13590 - Proof of Concept

References

https://vuldb.com/vuln/374593
vdb-entrytechnical-description
https://vuldb.com/vuln/374593/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-13590
third-party-advisory

CVSS V4

Score:
6.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

TYGLS (VulDB User)
.