CVE Watch23 oct 2026

CVE-2026-115723

Snap7 through 1.4.3 contains an out-of-bounds write vulnerability in the passive partner that allows a malicious active partner to overflow

CVSS

7.4

Alto

EPSS

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KEV

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Exploit Today

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0-100

Publicado: 23 oct 2026 · Última mod.: 23 oct 2026 · CWE-787

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

Snap7 through 1.4.3 contains an out-of-bounds write vulnerability in the passive partner that allows a malicious active partner to overflow application buffers by declaring an unvalidated BSend total length. Attackers connecting from the configured peer address can declare up to 65535 bytes and send a short fragment, causing BRecv to memcpy past the buffer and crash or corrupt SCADA, HMI or gateway processes.

Referencias oficiales

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