CVE-2021-20026

published 2021-05-27

CVE-2021-20026: A vulnerability in the SonicWall NSM On-Prem product allows an authenticated attacker to perform OS command injection using a crafted HTTP request. This…

Priority P2 63 high 8.8 CVSS 3.1

AV N AC L PR L UI N S U C H I H A H

A vulnerability in the SonicWall NSM On-Prem product allows an authenticated attacker to perform OS command injection using a crafted HTTP request. This vulnerability affects NSM On-Prem 2.2.0-R10 and earlier versions.

Affected

3 ranges

Vendor	Product	Version range	Fixed in
sonicwall	network_security_manager	< 2.2.0	2.2.0
sonicwall	network_security_manager	—	—
sonicwall	sonicwall_nsm_on-prem	—	—

Detection & IOCs extracted from sources · hover to see the quote

• → CVE-2021-20026 is exploited via a crafted HTTP request to SonicWall NSM On-Prem; monitor for anomalous or malformed HTTP requests targeting NSM On-Prem endpoints that may contain OS command injection payloads. ↗
• → The vulnerability is post-authentication and requires no user interaction; prioritize detection of authenticated sessions performing unexpected OS-level command execution on NSM On-Prem systems. ↗

• · Vulnerability affects NSM On-Prem 2.2.0-R10 and earlier versions only; systems running patched/later versions are not affected. ↗

CVSS provenance

nvd v3.1 8.8 HIGH CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvd v2.0 9.0 CRITICAL AV:N/AC:L/Au:S/C:C/I:C/A:C

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