01 Record
CVE-2021-20042
An unauthenticated remote attacker can use SMA 100 as an unintended proxy or intermediary undetectable proxy to bypass firewall rules. This vulnerability affected SMA 200, 210, 400, 410 and 500v
UnratedPUBLISHEDCNA: sonicwall
CNA base scoreUnratedNo CNA CVSS vector
02 Description
An unauthenticated remote attacker can use SMA 100 as an unintended proxy or intermediary undetectable proxy to bypass firewall rules. This vulnerability affected SMA 200, 210, 400, 410 and 500v
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 3.68% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 89.3% of scored records. A rank, not a probability.
- NVD base score
- 9.8 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2021-12-08 09:55Z4 YR AGO
- Last updated
- 2024-08-03 17:30Z2 YR AGO
- Reserved
- 2020-12-17
- Assigning CNA
- sonicwall
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-441Unintended Proxy or Intermediary ('Confused Deputy')Class
- Data version
- 5.1
- Document digest
- 212e24e39675676c3560016a3f6453ee5954e9cc89654e1f63898300d3da3050
05 Affected products
VendorProductVersionsPlatforms
SonicWallSonicWall SMA1009.0.0.11-31sv and earlier, 10.2.0.8-37sv and earlier, 10.2.1.1-19sv and earlier, 10.2.1.2-24sv and earlier—
06 References
- psirt.global.sonicwall.comhttps://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0026