Out-of-bounds Read in Lldpd
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…
Vulnerability class: Buffer Overflow
EPSS: 0.002 (13.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Lldpd — versions < 1.0.22
- Lldpd_project Lldpd
Weakness classification (CWE)
References
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Patch, x_refsource_MISC, Issue Tracking)
- security-advisories@github.com (Product, x_refsource_MISC, Release Notes)
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-46433?
- CVE-2026-46433 is a medium-severity vulnerability in Lldpd, classified under Out-of-bounds Read. CVSS score: 6.5/10. Published 2026-06-09.
- How severe is CVE-2026-46433?
- Medium severity. CVSS v3 base score is 6.5 out of 10.