CVEvulnerability

CVE-2021-27862

4.7 MEDIUM Published 2022-09-27 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2022-09-27
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
4.7 MEDIUM — CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
4.7 MEDIUM — CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
Weaknesses
CWE-130, CWE-290

Description

Layer 2 network filtering capabilities such as IPv6 RA guard can be bypassed using LLC/SNAP headers with invalid length and Ethernet to Wifi frame conversion (and optionally VLAN0 headers).

Affected configurations

• ieee ieee 802.2 (<= 802.2h-1997) • ietf p802.1q (<= d1.0)

Related

Weakness · CWE (2)

  • CWE-130 Improper Handling of Length Parameter Inconsistency weakness
  • CWE-290 Authentication Bypass by Spoofing weakness

References