Description


P-Net before 1.0.3, when built with PNET_OPTION_AR_VENDOR_BLOCKS enabled, parses a data length from a field of the ARVendorBlock request that is not part of the block definition and uses it as the number of bytes to copy into a fixed-size buffer, without comparing it with the buffer size or the block length. A crafted Connect request causes an out-of-bounds write. This can lead to a crash (denial of service) or potentially arbitrary code execution. This option is disabled by default.

Related CPE's


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Weaknesses


4b71179a-3b92-4a9d-b9fc-af8b8ed579ee

Secondary

CWE-787

CVSS impact metrics


CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

9.3 · Critical

Information


Source identifier

4b71179a-3b92-4a9d-b9fc-af8b8ed579ee

Vulnerability status

Deferred

Published

2026-10-29T16:17:57.480Z

14 hours ago

Last modified

2026-10-29T16:26:37.430Z

14 hours ago