CVEvulnerability
CVE-2021-20027
7.5 HIGH
Official page ↗
- Status
- Modified
- Published
- 2021-06-14
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS 2.0 ([email protected])
- 5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:N/A:P
- Weaknesses
- CWE-120
Description
A buffer overflow vulnerability in SonicOS allows a remote attacker to cause a Denial of Service (DoS) by sending a specially crafted request. This vulnerability affects SonicOS Gen5, Gen6, Gen7 platforms, and SonicOSv virtual firewalls.
Affected configurations
• sonicwall sonicos (<= 7.0.1-r1262)
• sonicwall sonicos (<= 7.0.1-r.1219)
• sonicwall sonicos (<= 7.0.1-r514)
• sonicwall sonicos (<= 5.9.1.13)
• sonicwall sonicos (<= 6.5.1.12)
• sonicwall sonicos (<= 6.5.4.7)
• sonicwall sonicos
• sonicwall sonicos (<= 6.0.5.3-94o)
Related
Weakness · CWE (1)
- CWE-120 Buffer Copy without Checking Size of Input weakness
References
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0016 Mitigation, Vendor Advisory
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0016 Mitigation, Vendor Advisory