CVE-2021-27861
UNKNOWN
Published 2022-09-27T18:40:13.742Z
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CVSS Score
V3.1
4.7
/10
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
Base Score Metrics
Exploitability: N/A
Impact: N/A
EPSS Score
v2025.03.14
0.000
probability
of exploitation in the wild
There is a 0.0% chance that this vulnerability will be exploited in the wild within the next 30 days.
Updated: 2025-06-25
Exploit Probability
Percentile: 0.003
Higher than 0.3% of all CVEs
Attack Vector Metrics
Impact Metrics
Description
Layer 2 network filtering capabilities such as IPv6 RA guard can be bypassed using LLC/SNAP headers with invalid length (and optionally VLAN0 headers)
Available Exploits
No exploits available for this CVE.
Related News
No news articles found for this CVE.
Affected Products
Affected Versions:
Affected Versions:
GitHub Security Advisories
Community-driven vulnerability intelligence from GitHub
⚠ Unreviewed
MODERATE
GHSA-wcc2-hc4j-m2wc
Advisory Details
Layer 2 network filtering capabilities such as IPv6 RA guard can be bypassed using LLC/SNAP headers with invalid length (and optionally VLAN0 headers)
CVSS Scoring
CVSS Score
5.0
CVSS Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
References
Advisory provided by GitHub Security Advisory Database. Published: September 28, 2022, Modified: May 21, 2025
References
Published: 2022-09-27T18:40:13.742Z
Last Modified: 2025-05-21T15:06:11.048Z
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