CVE-2021-44273 describes a critical vulnerability in e2guardian versions 5.4.x up to 5.4.3r, where the SSL MITM engine, when built with OpenSSL v1.1.x, failed to validate hostnames in web server certificates. This flaw, categorized as CWE-295, makes e2guardian itself susceptible to Man-in-the-Middle (MITM) attacks when operating in standalone proxy mode with SSL MITM enabled. The vulnerability carries a CVSS score of 7.4 (HIGH), indicating a network-based attack with high impact on confidentiality and integrity, but requiring high attack complexity. Currently, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 5.4.0, <= 5.4.3rCPE matchmatch criteria | cpe:2.3:a:e2bn:e2guardian:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
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.