TI-2021-20834 Aliases CVE-2021-45773 GHSA-qh39-hpr9-w6qx

A NULL pointer dereference in CS104_IPAddress_setFromString at…

LOW 35CWE-476Published 2022-01-14 · Updated 2024-08-04

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 · NVD. Fix status from CNA. Impact type from CWE-476.

Summary

A NULL pointer dereference in CS104_IPAddress_setFromString at src/iec60870/cs104/cs104_slave.c of lib60870 commit 0d5e76e can lead to a segmentation fault or application crash.

Why it matters now

EPSS 0.01097 65th 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

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:mz-automation:lib60870::::::::	before 2.3.1	Vulnerable	MZ Automation

cpe:2.3:a:mz-automation:lib60870:*:*:*:*:*:*:*:* Versions before 2.3.1 Vulnerable ·MZ Automation

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2021-45773
2026-10-03 Alias added: GHSA-qh39-hpr9-w6qx

References

Exploit 1

https://github.com/mz-automation/lib60870/issues/100

TI-2023-09169 An issue was discovered in lib60870 v2.3.2. CVSS 3.1MEDIUM 5.5
TI-2019-04346 An issue was discovered in lib60870 2.1.1. CVSS 3.0HIGH 7.5
TI-2021-04824 Reachable assertion in MZ Automation" CVSS 3.1HIGH 7.5

Sources

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