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TI-2026-11513 Aliases CVE-2026-13590GHSA-r3g9-96ff-r4rp

seladb PcapPlusPlus Modbus Protocol ModbusLayer.h getLength 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 security flaw has been discovered in seladb PcapPlusPlus 25.05. This impacts the function pcpp::ModbusLayer::getLength in the library Packet++/header/ModbusLayer.h of the component Modbus Protocol Handler. The manipulation of the argument length results in heap-based buffer overflow. The attack can be launched remotely. A high complexity level is associated with this attack. The exploitability is said to be difficult. The exploit has been released to the public and may be used for attacks. The patch is identified as 4c90c3e3418a2b09dc82b7ca5775e9c1e22fe454. Applying a patch is advised to resolve this issue.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00475 41st 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-2026-13590
  2. 2026-10-03 Alias added: GHSA-r3g9-96ff-r4rp

References

Exploit 1

Patch 2

Other 2

  • TI-2026-11512 seladb PcapPlusPlus Telnet Subnegotiation Packet TelnetLayer.cpp getSubCommand 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