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TI-2026-11512 Aliases CVE-2026-13589GHSA-x5wv-5f96-x49c

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

Priority MEDIUM 61CWE-119Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
Low · Low · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00394 33rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
seladbPcapPlusPlus25.05—No fix listedCNA
  • PcapPlusPlus Vendorseladb Affected 25.05 Fixed in — No fix listed CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:a:seladb:pcapplusplus:*:*:*:*:*:*:*:*——seladb
  • cpe:2.3:a:seladb:pcapplusplus:*:*:*:*:*:*:*:* Versions — — ·seladb

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-13589
  2. 2026-10-03 Alias added: GHSA-x5wv-5f96-x49c

References

Exploit 1

Patch 2

Other 2

  • TI-2026-11513 seladb PcapPlusPlus Modbus Protocol ModbusLayer.h getLength heap-based overflow CVSS 4.0MEDIUM 6.3
  • TI-2026-11511 seladb PcapPlusPlus TLS Hello SSLHandshake.cpp getHandshakeVersion heap-based overflow CVSS 4.0MEDIUM 6.3
  • TI-2026-11510 seladb PcapPlusPlus LightPcapNg light_pcapng.c parse_by_block_type heap-based overflow CVSS 4.0MEDIUM 6.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences