CVE-2026-13590
MediumCVSS 5.6Exploitation Probability (EPSS)
Low risk31th percentile - higher than 31% of all known CVEs
Summary
A security flaw in PcapPlusPlus 25.05 affects the pcpp::ModbusLayer::getLength function in ModbusLayer.h. Manipulating the length argument causes a heap-based buffer overflow, which can be exploited remotely.
Risk Assessment
An attacker can remotely crash the application or potentially execute arbitrary code, compromising system integrity and availability.
Recommendation
Apply the patch identified as 4c90c3e3418a2b09dc82b7ca5775e9c1e22fe454 immediately and update PcapPlusPlus to the latest version.
Other vulnerabilities in PcapPlusPlus
See all- CVE-2026-13589Medium
A heap-based buffer overflow vulnerability exists in PcapPlusPlus 25.05 in the pcpp::TelnetLayer::getSubCommand function of TelnetLayer.cpp. The attack can be initiated remotely but is difficult to exploit. A public exploit is available.
- CVE-2026-13588Medium
A heap-based buffer overflow vulnerability was found in PcapPlusPlus 25.05 in the function pcpp::SSLClientHelloMessage::getHandshakeVersion of SSLHandshake.cpp. An attacker can remotely manipulate the handshakeVersion argument, causing a buffer overflow. The attack complexity is high and exploitation is considered difficult, but the exploit has been publicly disclosed.
- CVE-2026-13587Low
In PcapPlusPlus 25.05, the function parse_by_block_type in light_pcapng.c is vulnerable to a heap-based buffer overflow. An attacker can remotely exploit this by manipulating the captured_packet_length argument, though the attack complexity is high and exploitation is difficult.
Original NVD description (English source)
A security flaw has been discovered in seladb PcapPlusPlus 25.05. This impacts the function pcpp::ModbusLayer::getLength in the library Packet++/header/ModbusLayer.h of the component Modbus Protocol Handler. The manipulation of the argument length results in heap-based buffer overflow. The attack can be launched remotely. A high complexity level is associated with this attack. The exploitability is said to be difficult. The exploit has been released to the public and may be used for attacks. The patch is identified as 4c90c3e3418a2b09dc82b7ca5775e9c1e22fe454. Applying a patch is advised to resolve this issue.