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lldpd

Vendor: lldpd_project

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Actively Exploited 0 CISA KEV List
PoC / Exploits 0 Code Available
Total RCEs 2 Remote Access
Total CVEs 7 Total Indexed
Avg. EPSS 2.34% Exploit Prob.
Latest CVE CVE-2026-46433 Jun 09

Security Vulnerability Index

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6.5 CVSS
CVE-2026-46433

lldpd is an implementation of IEEE 802.1ab (LLDP). Prior to version 1.0.22, lldpd_decode() in src/daemon/lldpd.c strips 802.1Q VLAN tags from received Ethernet frames by calling memmove() to shift the frame payload 4 bytes left. The third argument (byte count) is s - 2 * ETHER_ADDR_LEN but should be s - 2 * ETHER_ADDR_LEN - 4, causing a 4-byte heap buffer over-read past the malloc(h_mtu) allocation when the received frame size equals the interface MTU. This issue has been patched in version 1.0.22.

EPSS: 0.22%
9.8 CVSS
CVE-2023-41910

An issue was discovered in lldpd before 1.0.17. By crafting a CDP PDU packet with specific CDP_TLV_ADDRESSES TLVs, a malicious actor can remotely force the lldpd daemon to perform an out-of-bounds read on heap memory. This occurs in cdp_decode in daemon/protocols/cdp.c.

EPSS: 0.95%
7.5 CVSS
CVE-2021-43612
RCE

In lldpd before 1.0.13, when decoding SONMP packets in the sonmp_decode function, it's possible to trigger an out-of-bounds heap read via short SONMP packets.

EPSS: 1.14%
7.5 CVSS
CVE-2020-27827

A flaw was found in multiple versions of OpenvSwitch. Specially crafted LLDP packets can cause memory to be lost when allocating data to handle specific optional TLVs, potentially causing a denial of service. The highest threat from this vulnerability is to system availability.

EPSS: 3.23%
7.5 CVSS
CVE-2015-8012

lldpd before 0.8.0 allows remote attackers to cause a denial of service (assertion failure and daemon crash) via a malformed packet.

EPSS: 3.00%
9.8 CVSS
CVE-2015-8011
RCE

Buffer overflow in the lldp_decode function in daemon/protocols/lldp.c in lldpd before 0.8.0 allows remote attackers to cause a denial of service (daemon crash) and possibly execute arbitrary code via vectors involving large management addresses and TLV boundaries.

EPSS: 5.49%