CVE-2021-278624.7MediumCWE-130

CVE-2021-27862: L2 network filtering bypass using stacked VLAN0 and LLC/SNAP headers with an invalid length during Ethernet to Wifi frame translation

IEEE · 802.2

Affected: IEEE 802.2 · Exploitation: unlikely (under 1%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

0.7%probability of exploitation in the next 30 days

53rd percentile

050100

Higher than 53% of scored CVEs

4.7MediumCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

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 products2

From the CVE record. A product or version that is not listed is unknown, not unaffected.

IEEE · 802.2from 802.2h-1997 up to and including 802.2h-1997
IETF · draft-ietf-v6ops-ra-guard-08from 08 up to and including 08

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Unlikely (under 1%). EPSS under 1%, or no score yet.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Improper Handling of Length Parameter Inconsistency · Memory Corruption
Vendor: IEEE
Published: September 2022
Band: Unlikely (under 1%), September 2022

CoverageNo articles yet

No CyberSIXT article names CVE-2021-27862 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.