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Sma 200 Firmware CVE-2021-20034

CRITICAL
Improper Access Control (CWE-284)
2021-09-27 PSIRT@sonicwall.com
9.1
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
9.1 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
High

Lifecycle Timeline

1
CVE Published
Sep 27, 2021 - 18:15 nvd
CRITICAL 9.1

DescriptionNVD

An improper access control vulnerability in SMA100 allows a remote unauthenticated attacker to bypass the path traversal checks and delete an arbitrary file potentially resulting in a reboot to factory default settings.

AnalysisAI

An improper access control vulnerability in SMA100 allows a remote unauthenticated attacker to bypass the path traversal checks and delete an arbitrary file potentially resulting in a reboot to. Rated critical severity (CVSS 9.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified under CWE-284. An improper access control vulnerability in SMA100 allows a remote unauthenticated attacker to bypass the path traversal checks and delete an arbitrary file potentially resulting in a reboot to factory default settings. Affected products include: Sonicwall Sma 200 Firmware, Sonicwall Sma 210 Firmware, Sonicwall Sma 400 Firmware, Sonicwall Sma 410 Firmware, Sonicwall Sma 500V.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

CVE-2021-20039 HIGH POC
8.8 Dec 08

Improper neutralization of special elements in the SMA100 management interface '/cgi-bin/viewcert' POST http method allo

CVE-2021-20038 CRITICAL POC
9.8 Dec 08

A Stack-based buffer overflow vulnerability in SMA100 Apache httpd server's mod_cgi module environment variables allows

CVE-2025-32819 HIGH POC
8.8 May 07

A vulnerability in SMA100 allows a remote authenticated attacker with SSLVPN user privileges to bypass the path traversa

CVE-2022-22273 CRITICAL
9.8 Mar 17

Improper neutralization of Special Elements leading to OS Command Injection vulnerability impacting end-of-life Secure R

CVE-2021-20045 CRITICAL
9.8 Dec 08

A buffer overflow vulnerability in SMA100 sonicfiles RAC_COPY_TO (RacNumber 36) method allows a remote unauthenticated a

CVE-2021-20042 CRITICAL
9.8 Dec 08

An unauthenticated remote attacker can use SMA 100 as an unintended proxy or intermediary undetectable proxy to bypass f

CVE-2021-20016 CRITICAL
9.8 Feb 04

A SQL-Injection vulnerability in the SonicWall SSLVPN SMA100 product allows a remote unauthenticated attacker to perform

CVE-2025-32820 HIGH
8.8 May 07

A vulnerability in SMA100 allows a remote authenticated attacker with SSLVPN user privileges can inject a path traversal

CVE-2023-5970 HIGH
8.8 Dec 05

Improper authentication in the SMA100 SSL-VPN virtual office portal allows a remote authenticated attacker to create an

CVE-2022-2915 HIGH
8.8 Aug 26

A Heap-based Buffer Overflow vulnerability in the SonicWall SMA100 appliance allows a remote authenticated attacker to c

CVE-2021-20044 HIGH
8.8 Dec 08

A post-authentication remote command injection vulnerability in SonicWall SMA100 allows a remote authenticated attacker

CVE-2021-20043 HIGH
8.8 Dec 08

A Heap-based buffer overflow vulnerability in SonicWall SMA100 getBookmarks method allows a remote authenticated attacke

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CVE-2021-20034 vulnerability details – vuln.today

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