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CVE-2021-20048

🗓️ 22 May 2025 21:00:15Reported by redhat.comType 
redhatcve
 redhatcve
🔗 access.redhat.com👁 16 Views

Stack-based overflow in SonicOS SessionID header enables a remote authenticated attacker to cause denial of service and possible code execution on Gen five to Gen seven firewalls.

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Refs
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2021-20048
10 Jan 202214:10
–attackerkb
bdu_fstec
BDU FSTEC
SonicOS Boundary Error Code Execution
31 Aug 202200:00
–bdu_fstec
cnnvd
CNNVD
SonicWall SonicOS 缓冲区错误漏洞
5 Jan 202200:00
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cnvd
CNVD
SonicWall SonicOS Buffer Overflow Vulnerability (CNVD-2022-06901)
10 Jan 202200:00
–cnvd
cve
CVE
CVE-2021-20048
7 Jan 202203:00
–cve
cvelist
Cvelist
CVE-2021-20048
7 Jan 202203:00
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euvd
EUVD
EUVD-2021-7511
3 Oct 202520:07
–euvd
ncsc
NCSC
Vulnerabilities fixed in SonicOS
6 Jan 202200:00
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nvd
NVD
CVE-2021-20048
10 Jan 202214:10
–nvd
osv_cve
osv_cve
CVE-2021-20048
10 Jan 202214:10
–osv_cve
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27 Mar 2026 15:04Current
7.8High risk
Vulners AI Score7.8
CVSS 26.5
CVSS 3.18.8
EPSS0.01939
16