CVE-2026-46433

Published: Giu 10, 2026 Last Modified: Giu 11, 2026
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 6,5
Source: [email protected]
Attack Vector: adjacent_network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high

Description

AI Translation Available

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 (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0001
Percentile
0,0th
Updated

EPSS Score Trend (Last 7 Days)

125

Out-of-bounds Read

Draft
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Confidentiality Availability Other
Potential Impacts:
Read Memory Bypass Protection Mechanism Dos: Crash, Exit, Or Restart Varies By Context
Applicable Platforms
Languages: Memory-Unsafe, C, C++
Technologies: ICS/OT
View CWE Details
Application

Lldpd by Lldpd Project

Product Information
Vendor Lldpd Project
Product Lldpd
Version Range Affected
To 1.0.22 (exclusive)
cpe:2.3:a:lldpd_project:lldpd:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://github.com/lldpd/lldpd/commit/ca931be63a9cae0fcd8e9…
https://github.com/lldpd/lldpd/commit/ca931be63a9cae0fcd8e9b6ae4e916d49f141cd6
https://github.com/lldpd/lldpd/pull/787
https://github.com/lldpd/lldpd/pull/787
https://github.com/lldpd/lldpd/releases/tag/1.0.22
https://github.com/lldpd/lldpd/releases/tag/1.0.22
https://github.com/lldpd/lldpd/security/advisories/GHSA-2g8…
https://github.com/lldpd/lldpd/security/advisories/GHSA-2g8p-2h3j-63m3