CVE-2026-51218: n/a
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.
AI Analysis
Technical Summary
CVE-2026-51218 describes a heap buffer overflow in the TS7Worker::PerformFunctionWrite() function within the snap7 library version 1.4.3. This vulnerability can be triggered by an unauthenticated attacker remotely sending a crafted packet, resulting in a denial of service condition. The issue is categorized under CWE-122 (Heap-based Buffer Overflow). No official remediation or patch information is currently available.
Potential Impact
Successful exploitation of this vulnerability results in a denial of service (application crash or service disruption) without impacting confidentiality or integrity. The vulnerability can be exploited remotely without privileges or user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider restricting network access to the affected service to trusted sources to reduce exposure.
CVE-2026-51218: n/a
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.
CVSS v3.1
Score 7.5high
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-51218 describes a heap buffer overflow in the TS7Worker::PerformFunctionWrite() function within the snap7 library version 1.4.3. This vulnerability can be triggered by an unauthenticated attacker remotely sending a crafted packet, resulting in a denial of service condition. The issue is categorized under CWE-122 (Heap-based Buffer Overflow). No official remediation or patch information is currently available.
Potential Impact
Successful exploitation of this vulnerability results in a denial of service (application crash or service disruption) without impacting confidentiality or integrity. The vulnerability can be exploited remotely without privileges or user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider restricting network access to the affected service to trusted sources to reduce exposure.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-06-07T00:00:00.000Z
- Cvss Version
- null
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a42f37c27e9c797199f7583
Added to database: 06/29/2026, 22:36:44 UTC
Last enriched: 07/30/2026, 21:27:54 UTC
Last updated: 08/10/2026, 00:41:17 UTC
Views: 67
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