CVE-2021-27862 describes a bypass vulnerability in Layer 2 network filtering, specifically IPv6 RA guard, affecting IEEE 802.2 and 802.1Q standards. This medium-severity vulnerability (CVSS 4.7) allows an attacker on the adjacent network to bypass security controls with low complexity, potentially leading to information disclosure or integrity issues. While there is no known active exploitation, public exploit code, or KEV listing, the vulnerability has garnered some community discussion and media coverage, indicating awareness within the cybersecurity community.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 802.2h-1997CPE matchmatch criteria | cpe:2.3:a:ieee:ieee_802.2:*:*:*:*:*:*:*:* | ||
<= d1.0CPE matchmatch criteria | cpe:2.3:a:ietf:p802.1q:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
No social media mentions found for this CVE.
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.