CVE-2026-13589— seladb PcapPlusPlus Telnet Subnegotiation Packet TelnetLayer.cpp getSubCommand heap-based overflow
Possible ATT&CK Techniques 2AI
T1203 · Exploitation for Client Execution T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| seladb | PcapPlusPlus | 25.05 | affected |
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I. Basic Information for CVE-2026-13589
Vulnerability Information
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Vulnerability Title
seladb PcapPlusPlus Telnet Subnegotiation Packet TelnetLayer.cpp getSubCommand heap-based overflow
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
seladb pcapplusplus 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
seladb pcapplusplus是seladb个人开发者的一款网络数据包捕获与解析库。 seladb PcapPlusPlus 25.05版本存在缓冲区错误漏洞，该漏洞源于Telnet Subnegotiation Packet Handler组件中函数pcpp::TelnetLayer::getSubCommand，可能导致堆缓冲区溢出。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| seladb | PcapPlusPlus | 25.05 | cpe:2.3:a:seladb:pcapplusplus:*:*:*:*:*:*:*:* |
II. Public POCs for CVE-2026-13589
| # | POC Description | Source Link | Shenlong Link |
|---|
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Patches & Fixes for CVE-2026-13589 (2)
Proof of Concept for CVE-2026-13589 (1)
Vendor Pages for CVE-2026-13589 (1)
- 🔗 GitHub - seladb/PcapPlusPlus: PcapPlusPlus is a multiplatform C++ library for capturing, parsing and crafting of network packets. It is designed to be efficient, powerful and easy to use. It provides C++ wrappers for the most popular packet processing engines such as libpcap, Npcap, WinPcap, DPDK, AF_XDP and PF_RING. · GitHub Read full article product
Other References for CVE-2026-13589 (1)
Same Patch Batch · seladb · 2026-06-29 · 4 CVEs total
| CVE-2026-13588 | 5.6 MEDIUM | seladb PcapPlusPlus TLS Hello SSLHandshake.cpp getHandshakeVersion heap-based overflow |
| CVE-2026-13590 | 5.6 MEDIUM | seladb PcapPlusPlus Modbus Protocol ModbusLayer.h getLength heap-based overflow |
| CVE-2026-13587 | 3.7 LOW | seladb PcapPlusPlus LightPcapNg light_pcapng.c parse_by_block_type heap-based overflow |
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V. Comments for CVE-2026-13589
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