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CVE-2026-13589

seladb PcapPlusPlus Telnet Subnegotiation Packet TelnetLayer.cpp getSubCommand heap-based overflow

CVSS 6.3 MEDIUMEPSS 0.6%CWE-119CWE-122
Vexday Risk Score
33Attention
SSVC decision (CISA)
Attend
PoC available → attend closely
CVSS 6.3EPSS 0.6%KEV nãoPoC públicaNuclei Metasploit Patch referenciado
Lifecycle
29 Jun 2026Published on NVD
Recommendation: Plan a near-term fix — a public PoC already exists.
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.
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
Affected products
seladb · PcapPlusPlus
⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

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