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    CVE-2026-111732

    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.

    Published:Oct 29, 2026
    Last Modified:Oct 29, 2026
    EPS:Oct 29, 2026
    EPSS Score:
    CVSS Score:9.3

    Affected Products

    Vendor
    Rt-labs
    Product
    P-net

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-787 Out-of-bounds Write

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-115793 (CVSS 8.7) — P-Net before 1.0.3 does not release the RPC session allocated for an RPC request that names an unknown interfa…
    CVE-2026-115794 (CVSS 2.3) — P-Net before 1.0.3 passes the application alarm callback a data length derived from the variable part length f…
    CVE-2026-115795 (CVSS 5.3) — P-Net before 1.0.3 does not check that a complete block header is present in the received data before reading …
    CVE-2026-111736 (CVSS 8.7) — P-Net before 1.0.3 dereferences a NULL AR pointer in pf_fspm_cm_read_ind() when handling an implicit read requ…
    CVE-2026-112200 (CVSS 8.7) — P-Net before 1.0.3 does not release the Application Relationship (AR) and the RPC session when an RPC request …
    CVE-2026-111735 (CVSS 7.1) — P-Net before 1.0.3 contains an integer underflow in pf_cpm_c_data_ind(). When handling a received cyclic data …
    CVE-2026-111734 (CVSS 7.1) — P-Net before 1.0.3 does not validate the length of a received Ethernet frame in pf_eth_recv() before reading t…
    CVE-2026-111733 (CVSS 8.7) — P-Net before 1.0.3 dereferences a NULL AR pointer when handling an implicit read request without a valid targe…
    CVE-2026-111731 (CVSS 8.7) — P-Net before 1.0.3 enters an infinite loop when handling a read request for the PDPortDataCheck record with su…
    CVE-2026-111730 (CVSS 7.2) — P-Net before 1.0.3 does not validate the LengthPeerStationName field of a CheckPeers block in get_check_peer()…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High