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    CVE-2026-111734

    P-Net before 1.0.3 does not validate the length of a received Ethernet frame in pf_eth_recv() before reading the EtherType, any VLAN tags and the PROFINET FrameID. The VLAN tag loop had no upper bound, so a truncated frame, or a frame consisting only of VLAN tags, makes the function read past the end of the receive buffer. This can cause a crash (denial of service) or disclose memory content.

    Published:Oct 29, 2026
    Last Modified:Oct 29, 2026
    EPS:Oct 29, 2026
    EPSS Score:
    CVSS Score:7.1

    Affected Products

    Vendor
    Rt-labs
    Product
    P-net

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-125 Out-of-bounds Read

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-540 Overread Buffers

    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-2026-111733 (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-2026-111732 (CVSS 9.3) — P-Net before 1.0.3, when built with PNET_OPTION_AR_VENDOR_BLOCKS enabled, parses a data length from a field of…
    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