Vulnerabilidades do Davenardella Snap7
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CVEs publicadas que afetam Davenardella Snap7: 3 registro(s), com versões afetadas e correções.
CVE-2026-111280
Alta · 7.4
CWE-787 15/10/2026
snap7 through 1.4.3 Out-of-Bounds Write via TSnap7MicroClient::opReadArea
snap7 through 1.4.3 contains an out-of-bounds write vulnerability in TSnap7MicroClient::opReadArea() that allows malicious S7 peers to overflow client buffers via an unchecked DataLength field. Rogue or impersonated PLCs can return crafted ReadVar responses causing memcpy of up to 65535 bytes into caller buffers, crashing SCADA, HMI, or gateway processes and corrupting memory.
CVE-2026-16225
Média · 6.3
CWE-119 19/07/2026
davenardella snap7 s7_peer.cpp NegotiatePDULength out-of-bounds write
A security flaw has been discovered in davenardella snap7 up to 1.4.3. The impacted element is the function TSnap7Peer::NegotiatePDULength of the file src/core/s7_peer.cpp. The manipulation of the argument PDULength results in out-of-bounds write. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks.
CVE-2026-15105
Média · 6.3
CWE-119 08/07/2026
davenardella snap7 ReadVar Request s7_server.cpp PerformFunctionRead out-of-bounds write
A flaw has been found in davenardella snap7 up to 1.4.3. This affects the function TS7Worker::PerformFunctionRead of the file src/core/s7_server.cpp of the component ReadVar Request Handler. This manipulation causes out-of-bounds write. The attack requires access to the local network. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.