What’s Vulnerable › Vulnerabilities

CVE-2026-67873

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-06 · updated 2026-08-31
• Weakness: CWE-122

Description

A heap-based buffer overflow exists in lib60870-C 2.4.0 in the server-side FileSegment ASDU encoding path. The issue occurs because FileSegment_encode() validates only the standalone segment length via FileSegment_GetMaxDataSize() and does not verify the residual capacity of the current ASDU frame before encoding object fields and segment data

References

• https://github.com/mz-automation/lib60870
• https://github.com/mz-automation/lib60870/blob/master/user_guide.adoc
• https://github.com/mz-automation/lib60870/issues/201
• https://github.com/mz-automation/lib60870/releases/tag/v2.4.0
• https://github.com/mz-automation/lib60870/issues/201

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