CVE-2021-20046 is a stack-based buffer overflow vulnerability in SonicOS HTTP Content-Length response headers, affecting SonicWall Gen 5, Gen 6, and Gen 7 firmware versions. This flaw allows a remote authenticated attacker to trigger a Denial of Service and potentially achieve code execution. With a CVSS score of 8.8 (High), it presents a significant risk due to its low attack complexity and high impact on confidentiality, integrity, and availability. Despite its severity, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 7.0.1-r146CPE matchmatch criteria | cpe:2.3:o:sonicwall:sonicos:*:*:*:*:*:*:*:* | ||
<= 7.0.1-5023-1349CPE matchmatch criteria | cpe:2.3:o:sonicwall:sonicos:*:*:*:*:*:*:*:* | ||
<= 7.0.1-5018-r1715CPE matchmatch criteria | cpe:2.3:o:sonicwall:sonicos:*:*:*:*:*:*:*:* | ||
<= 6.5.4.8-89nCPE matchmatch criteria | cpe:2.3:o:sonicwall:sonicos:*:*:*:*:*:*:*:* | ||
<= 6.5.1.13-1nCPE matchmatch criteria | cpe:2.3:o:sonicwall:sonicos:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 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.