CVE Intelligence

Lldpd Project vulnerabilities

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Published CVEs affecting Lldpd Project products: 1 record(s), with severity, exploitation and fixes.

Lldpd 1

Exploited only (KEV) →

CVE-2026-46433 Medium · 6.5 CWE-125 Jun 9, 2026
lldpd: Heap OOB Read in VLAN Decapsulation memmove
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.