CVE-2026-13589: medium-severity vulnerability in seladb PcapPlusPlus
seladb PcapPlusPlus Telnet Subnegotiation Packet TelnetLayer.cpp getSubCommand heap-based overflow
Published
33Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 6.3epss 0.4%
exploitation probability
0.4%top 69% of all CVEs
observed exploitation
nono source reports it
1 public exploit(s)
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 · PcapPlusPluspublic PoCs found — 1
cve_referencegithub.com/user-attachments/files/28214571/poc.zipunverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
Related CVEs — seladb PcapPlusPlus
In the same product, most dangerous first.
CVE-2026-13587MEDIUMseladb PcapPlusPlus LightPcapNg light_pcapng.c parse_by_block_type heap-based overflowEPSS 0.4%CVE-2026-13590MEDIUMseladb PcapPlusPlus Modbus Protocol ModbusLayer.h getLength heap-based overflowEPSS 0.4%CVE-2026-13588MEDIUMseladb PcapPlusPlus TLS Hello SSLHandshake.cpp getHandshakeVersion heap-based overflowEPSS 0.4%
References
https://github.com/seladb/PcapPlusPlus/https://github.com/seladb/PcapPlusPlus/commit/98e671010bc7c87b95898c22ae289220ae92542bhttps://github.com/seladb/PcapPlusPlus/issues/2152https://github.com/seladb/PcapPlusPlus/pull/2161https://github.com/user-attachments/files/28214571/poc.ziphttps://vuldb.com/cve/CVE-2026-13589https://vuldb.com/submit/844482https://vuldb.com/vuln/374592https://vuldb.com/vuln/374592/cti