cve.bz

CVE-2021-27861

4.7 mediumEPSS 0.7%

Medium (4.7). EPSS 0.7% chance of exploitation in the next 30 days.

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

Severity

CVSS 3.1

4.7 medium
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
EPSS
0.7% chance of exploitation in the next 30 days; higher than 51% of CVEs (scores of 2026-10-31)
CWEs
CWE-290, CWE-130
Published
Modified
Record from
the NVD, synced

Affected

References

Check your stackJSON