AEGLIX vulnerability intelligence
CVE-2020-5135
CRITICAL · CVSS 9.8 · Analyzed
Published: 2020-10-12 · Updated: 2026-06-17 · Source: NVD
Vulnerability overview
A buffer overflow vulnerability in SonicOS allows a remote attacker to cause Denial of Service (DoS) and potentially execute arbitrary code by sending a malicious request to the firewall. This vulnerability affected SonicOS Gen 6 version 6.5.4.7, 6.5.1.12, 6.0.5.3, SonicOSv 6.5.4.v and Gen 7 version 7.0.0.0.
Severity and scoring
- CVSS score
- 9.8 · CRITICAL
- CVSS version
- 3.1
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-120
CVSS measures technical severity; it does not establish whether this vulnerability is being exploited in your environment.
Known exploitation and remediation
Listed in CISA’s Known Exploited Vulnerabilities catalog.
- Affected product
- SonicWall · SonicOS
- Added to catalog
- 2022-03-15
- Required action
- Apply updates per vendor instructions.
- CISA remediation due date
- 2022-04-05
CISA deadlines apply to the organizations covered by its directives. Confirm your own remediation requirements.
Verify affected versions and patch availability in the vendor advisory before making changes.
Affected products and versions
cpe:2.3:o:sonicwall:sonicos:*:*:*:*:*:*:*:*
Through (inclusive): 6.0.5.3
cpe:2.3:o:sonicwall:sonicos:*:*:*:*:*:*:*:*
From (inclusive): 6.5.0.0
Through (inclusive): 6.5.1.11
cpe:2.3:o:sonicwall:sonicos:*:*:*:*:*:*:*:*
From (inclusive): 6.5.4.0
Through (inclusive): 6.5.4.7
cpe:2.3:o:sonicwall:sonicos:7.0.0.0:*:*:*:*:*:*:*
cpe:2.3:o:sonicwall:sonicosv:*:*:*:*:*:*:*:*
Through (inclusive): 6.5.4.4
These are NVD CPE applicability entries. Some products depend on configuration conditions; consult the official record to confirm applicability.