CVE-2020-5135 is a critical buffer overflow vulnerability in SonicOS that affects SonicWall Gen 6 and Gen 7 firewalls. This flaw allows a remote, unauthenticated attacker to cause Denial of Service and potentially execute arbitrary code by sending a malicious request. With a CVSS score of 9.8 (CRITICAL) and a FAUCET Risk Score of 99/100, it presents a severe risk due to its network-based attack vector and low attack complexity. The vulnerability is actively exploited in the wild, as confirmed by its inclusion in CISA's KEV catalog, and has garnered significant community discussion and media coverage, despite a lack of public exploit code on platforms like Metasploit or ExploitDB.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 6.0.5.3CPE matchmatch criteria | cpe:2.3:o:sonicwall:sonicos:*:*:*:*:*:*:*:* | ||
>= 6.5.0.0, <= 6.5.1.11CPE matchmatch criteria | cpe:2.3:o:sonicwall:sonicos:*:*:*:*:*:*:*:* | ||
>= 6.5.4.0, <= 6.5.4.7CPE matchmatch criteria | cpe:2.3:o:sonicwall:sonicos:*:*:*:*:*:*:*:* | ||
7.0.0.0CPE matchmatch criteria | cpe:2.3:o:sonicwall:sonicos:7.0.0.0:*:*:*:*:*:*:* | ||
<= 6.5.4.4CPE matchmatch criteria | cpe:2.3:o:sonicwall:sonicosv:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/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, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.