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Status published
High
CVE-2021-20048
A Stack-based buffer overflow in the SonicOS SessionID HTTP response...
Vulnerability Description
A Stack-based buffer overflow in the SonicOS SessionID HTTP response header allows a remote authenticated attacker to cause Denial of Service (DoS) and potentially results in code execution in the firewall. This vulnerability affected SonicOS Gen 5, Gen 6 and Gen 7 firmware versions.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
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Affected Vendor
SonicWall
View all reports →Affected Software
SonicOS
Vulnerable Versions:
7.0.1-R146 and earlier, 7.0.1-5023-1349 and earlier, 7.0.1-5018-R1715 and earlier, 6.5.4.8-89n and earlier, 6.5.1.13-1n and earlier, 6.0.5.3-94o and earlier, 6.5.4.v_21s-1288 and earlier, 5.9.1.13 and earlier
Timeline
Official Publish:
January 7th, 2022
Last Modified:
August 3rd, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H