A heap buffer overflow in the TS7Worker::PerformFunctionWrite() function (/core/s7_server.cpp) of snap7 v1.4.3 allows attackers to cause a Denial of Service (DoS) via a crafted packet.
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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Fixes
Solution
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Workaround
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References
History
Mon, 29 Jun 2026 22:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | A heap buffer overflow in the TS7Worker::PerformFunctionWrite() function (/core/s7_server.cpp) of snap7 v1.4.3 allows attackers to cause a Denial of Service (DoS) via a crafted packet. | |
| References |
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MITRE
Status: PUBLISHED
Assigner: mitre
Published:
Updated: 2026-06-29T22:07:41.773Z
Reserved: 2026-06-07T00:00:00.000Z
Link: CVE-2026-51218
Vulnrichment
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NVD
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