CVE-2021-20034

CRITICAL

SonicWall SMA 200/210/400/410/500v < 9.0.0.10-28sv - Unauthenticated Arbitrary File Deletion via Path Traversal Bypass

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-20034. PoCs published by Jacob Baines.

AI-analyzed exploit summary This exploit leverages a path traversal vulnerability in SonicWall SMA 10.2.1.0-17sv to overwrite the persistent database, allowing an attacker to reset the password on reboot. The exploit uses a crafted curl request to access and modify the database file.

Description

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.

Exploits (1)

exploitdb WORKING POC
by Jacob Baines · textwebappshardware
https://www.exploit-db.com/exploits/50430

This exploit leverages a path traversal vulnerability in SonicWall SMA 10.2.1.0-17sv to overwrite the persistent database, allowing an attacker to reset the password on reboot. The exploit uses a crafted curl request to access and modify the database file.

Classification
Working Poc 90%
Attack Type
Other
Complexity
Trivial
Reliability
Reliable
Target: SonicWall SMA 100 Series using 9.0.0.10-28sv, 10.2.0.7-34sv, and 10.2.1.0-17sv
No auth needed
Prerequisites: Network access to the target device
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (2)

Core 2
Core References

Scores

CVSS v3 9.1
EPSS 0.8114
EPSS Percentile 99.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Details

CWE
CWE-284 CWE-22
Status published
Products (5)
sonicwall/sma_200_firmware < 9.0.0.10-28sv
sonicwall/sma_210_firmware < 9.0.0.10-28sv
sonicwall/sma_400_firmware < 9.0.0.10-28sv
sonicwall/sma_410_firmware < 9.0.0.10-28sv
sonicwall/sma_500v < 9.0.0.10-28sv
Published Sep 27, 2021
Tracked Since Feb 18, 2026