CVE-2026-67873: n/a
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
AI Analysis
Technical Summary
This vulnerability exists in lib60870-C 2.4.0 within the FileSegment_encode() function used on the server side. The function only validates the standalone segment length using FileSegment_GetMaxDataSize() but fails to check the remaining capacity of the current ASDU frame before encoding object fields and segment data. This can lead to a heap-based buffer overflow condition.
Potential Impact
A heap-based buffer overflow can potentially lead to memory corruption, which may cause application crashes or enable an attacker to execute arbitrary code if exploited. However, no known exploits are reported in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, avoid using lib60870-C version 2.4.0 in environments where untrusted input could trigger this vulnerability.
CVE-2026-67873: n/a
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
CVSS v3.1
Score 9.8critical
Affected software
pkg:github/mz-automation/lib60870Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability exists in lib60870-C 2.4.0 within the FileSegment_encode() function used on the server side. The function only validates the standalone segment length using FileSegment_GetMaxDataSize() but fails to check the remaining capacity of the current ASDU frame before encoding object fields and segment data. This can lead to a heap-based buffer overflow condition.
Potential Impact
A heap-based buffer overflow can potentially lead to memory corruption, which may cause application crashes or enable an attacker to execute arbitrary code if exploited. However, no known exploits are reported in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, avoid using lib60870-C version 2.4.0 in environments where untrusted input could trigger this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-07-30T00:00:00.000Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a73c6b4bf8831d5399d0b90
Added to database: 08/05/2026, 23:26:44 UTC
Last enriched: 08/05/2026, 23:44:54 UTC
Last updated: 08/18/2026, 10:56:17 UTC
Views: 46
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