CVE-2021-27245 describes a firewall bypass vulnerability in TP-Link Archer A7 routers prior to specific firmware versions. This flaw, stemming from inadequate filtering of IPv6 SSH connections, allows unauthenticated attackers to bypass firewall rules. With a CVSS score of 8.1 (High), it has a high impact on confidentiality, integrity, and availability, and can be leveraged to achieve root-level code execution when combined with other vulnerabilities. While no public exploits or active exploitation are reported, and community discussion is minimal, the potential for significant compromise remains.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< c7\(us\)_v5_210125CPE matchmatch criteria | cpe:2.3:o:tp-link:archer_a7_firmware:*:*:*:*:*:*:*:* | ||
< a7\(us\)_v5_200220CPE matchmatch criteria | cpe:2.3:o:tp-link:archer_a7_firmware:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.