Read the docs
TI-2024-24425 Aliases CVE-2024-36844GHSA-2625-j643-gg22

libmodbus v3.1.6 was discovered to contain a use-after-free via the ctx->backend pointer.

Priority HIGH 72CWE-416Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-416 and the CVSS impact.

Summary

libmodbus v3.1.6 was discovered to contain a use-after-free via the ctx->backend pointer. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted message sent to the unit-test-server.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00606 49th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
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
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:libmodbus:libmodbus:3.1.6:*:*:*:*:*:*:*3.1.6Vulnerablelibmodbus
  • cpe:2.3:a:libmodbus:libmodbus:3.1.6:*:*:*:*:*:*:* Versions 3.1.6 Vulnerable ·libmodbus

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-02 Threatist record created from CVE-2024-36844
  2. 2026-10-03 Alias added: GHSA-2625-j643-gg22

References

Exploit 1

  • TI-2023-11779 libmodbus v3.1.10 has a heap-based buffer overflow vulnerability in read_io_status function in src/modbus.c. CVSS 3.1CRITICAL 9.8
  • TI-2024-24424 libmodbus v3.1.6 was discovered to contain a heap overflow via the modbus_mapping_free() function. CVSS 3.1HIGH 7.5
  • TI-2024-22653 libmodbus v3.1.10 is vulnerable to Buffer Overflow via the modbus_write_bits function. CVSS 3.1HIGH 7.5
  • TI-2024-24426 An invalid pointer in the modbus_receive() function of libmodbus v3.1.6 allows attackers… CVSS 3.1MEDIUM 4.3
  • TI-2024-10121 Stack-based Buffer Overflow in libmodbus library CVSS 3.1CRITICAL 9.8
  • TI-2019-10782 An issue was discovered in libmodbus before 3.0.7 and 3.1.x before 3.1.5. CVSS 3.1CRITICAL 9.1
See all 8 →

Sources

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