CVE-2026-13589: Seladb Pcapplusplus

Medium severity, CVSS 5.6. EPSS: 0.4% chance of exploitation in the next 30 days.

A vulnerability was identified in seladb PcapPlusPlus 25.05. This affects the function pcpp::TelnetLayer::getSubCommand of the file Packet++/src/TelnetLayer.cpp of the component Telnet Subnegotiation Packet Handler. The manipulation leads to heap-based buffer overflow. The attack can be initiated remotely. The complexity of an attack is rather high. The exploitability is reported as difficult. The exploit is publicly available and might be used. The identifier of the patch is 98e671010bc7c87b95898c22ae289220ae92542b. It is recommended to apply a patch to fix this issue.

Affected products

• Seladb Pcapplusplus: version 25.05 only

Published 2026-06-29. Last modified 2026-06-29.