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    CVE-2021-20034

    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.

    Published:Sep 27, 2021
    Last Modified:Nov 21, 2024
    EPS:Sep 27, 2021
    EPSS Score:0.05436
    CVSS Score:9.1

    Affected Products

    Vendor
    Sonicwall
    Product
    Sma 200
    Vendor
    Sonicwall
    Product
    Sma 200 Firmware
    Vendor
    Sonicwall
    Product
    Sma 210
    Vendor
    Sonicwall
    Product
    Sma 210 Firmware
    Vendor
    Sonicwall
    Product
    Sma 400
    Vendor
    Sonicwall
    Product
    Sma 400 Firmware
    Vendor
    Sonicwall
    Product
    Sma 410
    Vendor
    Sonicwall
    Product
    Sma 410 Firmware
    Vendor
    Sonicwall
    Product
    Sma 500v

    Exploits

    http://packetstormsecurity.com/files/164564/SonicWall-SMA-10.2.1.0-17sv-Password-Reset.htmlhttp://packetstormsecurity.com/files/164564/SonicWall-SMA-10.2.1.0-17sv-Password-Reset.htmlhttps://www.exploit-db.com/exploits/50430

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-126 Path Traversal
    CAPEC-19 Embedding Scripts within Scripts
    CAPEC-441 Malicious Logic Insertion
    CAPEC-478 Modification of Windows Service Configuration
    CAPEC-479 Malicious Root Certificate
    CAPEC-502 Intent Spoof
    CAPEC-503 WebView Exposure
    CAPEC-536 Data Injected During Configuration
    CAPEC-546 Incomplete Data Deletion in a Multi-Tenant Environment
    CAPEC-550 Install New Service
    CAPEC-551 Modify Existing Service
    CAPEC-552 Install Rootkit
    CAPEC-556 Replace File Extension Handlers
    CAPEC-558 Replace Trusted Executable
    CAPEC-562 Modify Shared File
    CAPEC-563 Add Malicious File to Shared Webroot
    CAPEC-564 Run Software at Logon
    CAPEC-578 Disable Security Software
    CAPEC-64 Using Slashes and URL Encoding Combined to Bypass Validation Logic
    CAPEC-76 Manipulating Web Input to File System Calls
    CAPEC-78 Using Escaped Slashes in Alternate Encoding
    CAPEC-79 Using Slashes in Alternate Encoding

    Related CVEs

    CVE-2025-32821 (CVSS 7.2) — A vulnerability in SMA100 allows a remote authenticated attacker with SSLVPN admin privileges can with admin p…
    CVE-2025-32820 (CVSS 8.8) — A vulnerability in SMA100 allows a remote authenticated attacker with SSLVPN user privileges can inject a path…
    CVE-2025-32819 (CVSS 8.8) — A vulnerability in SMA100 allows a remote authenticated attacker with SSLVPN user privileges to bypass the pat…
    CVE-2024-53703 (CVSS 8.1) — A vulnerability in the SonicWall SMA100 SSLVPN firmware 10.2.1.13-72sv and earlier versions mod_httprp library…
    CVE-2024-53702 (CVSS 5.3) — Use of cryptographically weak pseudo-random number generator (PRNG) vulnerability in the SonicWall SMA100 SSLV…
    CVE-2024-45319 (CVSS 6.3) — A vulnerability in the SonicWall SMA100 SSLVPN firmware 10.2.1.13-72sv and earlier versions allows a remote …
    CVE-2024-45318 (CVSS 8.1) — A vulnerability in the SonicWall SMA100 SSLVPN web management interface allows remote attackers to cause Stack…
    CVE-2024-40763 (CVSS 7.5) — Heap-based buffer overflow vulnerability in the SonicWall SMA100 SSLVPN due to the use of strcpy. This allows …
    CVE-2024-38475 (CVSS 9.1) — Improper escaping of output in mod_rewrite in Apache HTTP Server 2.4.59 and earlier allows an attacker to map …
    CVE-2024-22395 (CVSS 6.3) — Improper access control vulnerability has been identified in the SMA100 SSL-VPN virtual office portal, which i…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High