CVE-2026-102051

An Improper Release of Memory Before Removing Last Reference vulnerability in the l2cpd process of Juniper Networks Junos OS and Junos OS Evolved platforms allows an adjacent unauthenticated attacker to cause l2cpd memory exhaustion and Layer 2 control-plane disruption via LLDP traffic when fast...

CVE-2026-102050

A Stack-based Buffer Overflow vulnerability in the l2cpd daemon of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker to cause a denial of service in Layer 2 control-plane processing via LLDP packets received on an interface configured for LLDP. Repeated...

CVE-2026-102047

An Improper Validation of Consistency within Input vulnerability in the l2cpd process of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent unauthenticated Layer 2 attacker to cause a denial of service in associated Layer 2 control protocols via a crafted MVRP Ethernet frame sent t...

EUVD-2026-101375

An Improper Release of Memory Before Removing Last Reference vulnerability in the l2cpd process of Juniper Networks Junos OS and Junos OS Evolved platforms allows an adjacent unauthenticated attacker to cause l2cpd memory exhaustion and Layer 2 control-plane disruption via LLDP traffic when fast...

CVE-2026-102051 Junos OS and Junos OS Evolved: An attacker causes l2cpd memory exhaustion when LLDP fast receive processing is enabled

An Improper Release of Memory Before Removing Last Reference vulnerability in the l2cpd process of Juniper Networks Junos OS and Junos OS Evolved platforms allows an adjacent unauthenticated attacker to cause l2cpd memory exhaustion and Layer 2 control-plane disruption via LLDP traffic when fast...

CVE-2026-102051

The l2cpd process in Juniper Networks Junos OS and Junos OS Evolved platforms is vulnerable to an Improper Release of Memory Before Removing Last Reference (CWE-401). An adjacent unauthenticated attacker can trigger l2cpd memory exhaustion and Layer 2 control-plane disruption by sending LLDP traf...

EUVD-2026-101374

A Stack-based Buffer Overflow vulnerability in the l2cpd daemon of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker to cause a denial of service in Layer 2 control-plane processing via LLDP packets received on an interface configured for LLDP. Repeated...

CVE-2026-102050: Stack-based Buffer Overflow

A Stack-based Buffer Overflow vulnerability in the l2cpd daemon of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker to cause a denial of service in Layer 2 control-plane processing via LLDP packets received on an interface configured for LLDP. Repeated...

CVE-2026-102051: Missing Release of Memory after Effective Lifetime

An Improper Release of Memory Before Removing Last Reference vulnerability in the l2cpd process of Juniper Networks Junos OS and Junos OS Evolved platforms allows an adjacent unauthenticated attacker to cause l2cpd memory exhaustion and Layer 2 control-plane disruption via LLDP traffic when fast...

EUVD-2022-27319

Malicious code in bioql PyPI...

EUVD-2023-40769

Malicious code in bioql PyPI...

CVE-2025-30646

A Signed to Unsigned Conversion Error vulnerability in the Layer 2 Control Protocol daemon l2cpd of Juniper Networks Junos OS and Juniper Networks Junos OS Evolved allows an unauthenticated adjacent attacker sending a specifically malformed LLDP TLV to cause the l2cpd process to crash and restart...

CVE-2025-30646

CVE-2025-30646 affects Junos OS and Junos OS Evolved. A Signed to Unsigned Conversion Error in the Layer 2 Control Protocol daemon (l2cpd) allows an unauthenticated adjacent attacker to cause the l2cpd process to crash and restart by sending a specially formed LLDP TLV, yielding a Denial of Servi...

PT-2025-15854 · Juniper Networks · Junos Evolved +1

Name of the Vulnerable Software and Affected Versions: Junos OS versions prior to 21.2R3-S9 Junos OS versions from 21.4 before 21.4R3-S10 Junos OS versions from 22.2 before 22.2R3-S6 Junos OS versions from 22.4 before 22.4R3-S6 Junos OS versions from 23.2 before 23.2R2-S3 Junos OS versions from...

Juniper Junos OS Vulnerability (JSA96456)

The version of Junos OS installed on the remote host is affected by a vulnerability as referenced in the JSA96456 advisory. - A Signed to Unsigned Conversion Error vulnerability in the Layer 2 Control Protocol daemon l2cpd of Juniper Networks Junos OS and Juniper Networks Junos OS Evolved allows ...

CVE-2024-21618

CVE-2024-21618 affects Juniper Junos OS and Junos OS Evolved, where receiving a malformed LLDP packet on an interface with LLDP enabled can trigger an Access of Memory Location After End of Buffer in the Layer-2 Control Protocols Daemon (l2cpd). This causes l2cpd to crash and restart, reinitializ...

CVE-2023-36839

An Improper Validation of Specified Quantity in Input vulnerability in the Layer-2 control protocols daemon l2cpd of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker who sends specific LLDP packets to cause a Denial of ServiceDoS. This issue occurs when...

Input validation

An Improper Validation of Specified Quantity in Input vulnerability in the Layer-2 control protocols daemon l2cpd of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker who sends specific LLDP packets to cause a Denial of ServiceDoS. This issue occurs when...

CVE-2023-36839

The CVE-2023-36839 issue affects Juniper Networks Junos OS and Junos OS Evolved. Affected component: Layer-2 control protocols daemon (l2cpd). Root cause: Improper validation of specified quantity in input, triggered by specific LLDP packets from an unauthenticated adjacent attacker, leading to a...

CVE-2023-36849

An Improper Check or Handling of Exceptional Conditions vulnerability in the Layer-2 control protocols daemon l2cpd of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker to cause a Denial of Service DoS. When a malformed LLDP packet is received, l2cpd will...