CVE-2026-51218
A heap buffer overflow in the TS7Worker::PerformFunctionWrite() function (/core/s7_server.cpp) of snap7 v1.4.3 allows attackers to cause a D
CVSS
7.5
High
EPSS
0.4%
p35
KEV
—
Exploit Today
10
0-100
Published: Jun 29, 2026 · Last modified: Jul 30, 2026 · CWE-122
0.4%EPSS · 30 days0.4%
2026-08-262026-09-23
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.
CVECVSSEPSSKEVRExploitTitleMod.
CVE-2026-97152——
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——8Bridge is affected by a Heap-based Buffer Overflow vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.1dCVE-2026-756497.8 HIG27.3%
——8Bridge is affected by a Heap-based Buffer Overflow vulnerability that could result in arbitrary code execution in the context of the current user. Exploitation of this issue requires user interaction in that a victim must open a malicious file.1dCVE-2026-18457—36.5%
——11Heap-based Buffer Overflow vulnerability in RTI Connext Professional (Core Libraries) allows Overflow Buffers. This issue affects Connext Professional: from 7.4.0 before 7.7.0.1, from 7.0.0 before 7.3.1.6, from 6.1.0 before 6.1.*, from 6.0.0 before 6.0.*, from 5.3.0 before 5.3.*, from 5.2.3 before 5.2.*.2dCVE-2026-941279.8 CRI71.2%
KEV—71F5 BIG-IP APM Heap-based Buffer Overflow Vulnerability23hCVE-2016-150599.8 CRI34.2%
——10Net::IDN::Punycode versions before 2.301 for Perl allow a heap buffer overflow via unchecked writes past the output buffer in encode_punycode.
The XS backend builds the encoded label in the string buffer of the scalar it returns, sized from the input length. The loop that emits the digits of each code point checks for room before every write, but the write of the last digit of each round and the write of the terminating NUL do not, so an input whose encoded form fills the buffer writes past its end.
Only the XS backend is affected.
Encoding an attacker-supplied string corrupts the heap.2d