Path Traversal in Sonicwall Sma100
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.
EPSS: 0.807 (99.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H.
Affected products
- Sonicwall Sma100 — versions 9.0.0.10-28sv and earlier, 10.2.0.7-34sv and earlier, 10.2.1.0-17sv and earlier
- Sonicwall Sma_200
- Sonicwall Sma_200_firmware
- Sonicwall Sma_210
- Sonicwall Sma_210_firmware
- Sonicwall Sma_400
- Sonicwall Sma_400_firmware
- Sonicwall Sma_410
- Sonicwall Sma_410_firmware
- Sonicwall Sma_500v
Weakness classification (CWE)
Public proof-of-concept exploits
References
- PSIRT@sonicwall.com (x_refsource_CONFIRM, Vendor Advisory)
- PSIRT@sonicwall.com (Exploit, VDB Entry, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-20034?
- CVE-2021-20034 is a critical-severity vulnerability in Sonicwall Sma100, classified under Improper Access Control. CVSS score: 9.1/10. Published 2021-09-27.
- How severe is CVE-2021-20034?
- Critical severity. CVSS v3 base score is 9.1 out of 10.
- Is CVE-2021-20034 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.