Buffer overflow in Sonicwall Sma_200
CVE-2021-20045
A buffer overflow vulnerability in SMA100 sonicfiles RAC_COPY_TO (RacNumber 36) method allows a remote unauthenticated attacker to potentially execute code as the 'nobody' user in the appliance. This vulnerability affected SMA 200, 210, 40…
Vulnerability class: Buffer Overflow
EPSS: 0.252 (97.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Sonicwall Sma_200
- Sonicwall Sma_200_firmware — versions 10.2.0.8-37sv, 10.2.1.1-19sv
- Sonicwall Sma_210
- Sonicwall Sma_210_firmware — versions 10.2.0.8-37sv, 10.2.1.1-19sv
- Sonicwall Sma_400
- Sonicwall Sma_400_firmware — versions 10.2.0.8-37sv, 10.2.1.1-19sv
- Sonicwall Sma_410
- Sonicwall Sma_410_firmware — versions 10.2.0.8-37sv, 10.2.1.1-19sv
- Sonicwall Sma_500v
- Sonicwall Sma_500v_firmware — versions 10.2.0.8-37sv, 10.2.1.1-19sv
Weakness classification (CWE)
Public proof-of-concept exploits
References
- PSIRT@sonicwall.com (x_refsource_CONFIRM, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-20045?
- CVE-2021-20045 is a critical-severity vulnerability in Sonicwall Sma_200, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 9.8/10. Published 2021-12-08.
- How severe is CVE-2021-20045?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2021-20045 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.