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TI-2021-03353 Aliases CVE-2021-20034GHSA-vfqg-fwg4-f3vx

Improper access control in SonicWall SMA100

Priority HIGH 80CWE-284Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
None · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-284.

Summary

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.

Why it matters now

EPSS 0.81831 99th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
SonicWallSMA100up to 9.0.0.10-28sv; up to 10.2.0.7-34sv; up to 10.2.1.0-17sv—No fix listedCNA
  • SMA100 VendorSonicWall Affected up to 9.0.0.10-28sv; up to 10.2.0.7-34sv; up to 10.2.1.0-17sv Fixed in — No fix listed CNA

CPE configurations NVD · 9

CPEVersionsRoleVendor
cpe:2.3:o:sonicwall:sma_200_firmware:*:*:*:*:*:*:*:*up to 9.0.0.10-28sv; 10.2.0.0 – 10.2.0.7-34sv; 10.2.1.0 – 10.2.1.0-17svVulnerableSonicWall
cpe:2.3:h:sonicwall:sma_200:-:*:*:*:*:*:*:*not specified by NVDRunning onSonicWall
cpe:2.3:o:sonicwall:sma_210_firmware:*:*:*:*:*:*:*:*up to 9.0.0.10-28sv; 10.2.0.0 – 10.2.0.7-34sv; 10.2.1.0 – 10.2.1.0-17svVulnerableSonicWall
cpe:2.3:h:sonicwall:sma_210:-:*:*:*:*:*:*:*not specified by NVDRunning onSonicWall
cpe:2.3:o:sonicwall:sma_400_firmware:*:*:*:*:*:*:*:*up to 9.0.0.10-28sv; 10.2.0.0 – 10.2.0.7-34sv; 10.2.1.0 – 10.2.1.0-17svVulnerableSonicWall
cpe:2.3:h:sonicwall:sma_400:-:*:*:*:*:*:*:*not specified by NVDRunning onSonicWall
cpe:2.3:o:sonicwall:sma_410_firmware:*:*:*:*:*:*:*:*up to 9.0.0.10-28sv; 10.2.0.0 – 10.2.0.7-34sv; 10.2.1.0 – 10.2.1.0-17svVulnerableSonicWall
cpe:2.3:h:sonicwall:sma_410:-:*:*:*:*:*:*:*not specified by NVDRunning onSonicWall
cpe:2.3:a:sonicwall:sma_500v:*:*:*:*:*:*:*:*up to 9.0.0.10-28sv; 10.2.0.0 – 10.2.0.7-34sv; 10.2.1.0 – 10.2.1.0-17svVulnerableSonicWall
  • cpe:2.3:o:sonicwall:sma_200_firmware:*:*:*:*:*:*:*:* Versions up to 9.0.0.10-28sv; 10.2.0.0 – 10.2.0.7-34sv; 10.2.1.0 – 10.2.1.0-17sv Vulnerable ·SonicWall
  • cpe:2.3:h:sonicwall:sma_200:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·SonicWall
  • cpe:2.3:o:sonicwall:sma_210_firmware:*:*:*:*:*:*:*:* Versions up to 9.0.0.10-28sv; 10.2.0.0 – 10.2.0.7-34sv; 10.2.1.0 – 10.2.1.0-17sv Vulnerable ·SonicWall
  • cpe:2.3:h:sonicwall:sma_210:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·SonicWall
  • cpe:2.3:o:sonicwall:sma_400_firmware:*:*:*:*:*:*:*:* Versions up to 9.0.0.10-28sv; 10.2.0.0 – 10.2.0.7-34sv; 10.2.1.0 – 10.2.1.0-17sv Vulnerable ·SonicWall
  • cpe:2.3:h:sonicwall:sma_400:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·SonicWall
  • cpe:2.3:o:sonicwall:sma_410_firmware:*:*:*:*:*:*:*:* Versions up to 9.0.0.10-28sv; 10.2.0.0 – 10.2.0.7-34sv; 10.2.1.0 – 10.2.1.0-17sv Vulnerable ·SonicWall
  • cpe:2.3:h:sonicwall:sma_410:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·SonicWall
  • cpe:2.3:a:sonicwall:sma_500v:*:*:*:*:*:*:*:* Versions up to 9.0.0.10-28sv; 10.2.0.0 – 10.2.0.7-34sv; 10.2.1.0 – 10.2.1.0-17sv Vulnerable ·SonicWall

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-20034
  2. 2026-10-03 Alias added: GHSA-vfqg-fwg4-f3vx

References

Exploit 1

Advisory 1

  • TI-2021-03356 Stack-based buffer overflow in SonicWall SMA100 KEVCVSS 3.1CRITICAL 9.8
  • TI-2021-03337 SQL injection in SonicWall SMA100 KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-25716 Apache HTTP Server weakness in mod_rewrite when first segment of substitution matches filesystem path. KEVCVSS 3.1CRITICAL 9.1
  • TI-2023-23752 OS command injection in SonicWall SMA100 KEVCVSS 3.1HIGH 7.2
  • TI-2021-03354 OS command injection in SonicWall SMA100 KEVCVSS 3.1MEDIUM 6.5
  • TI-2021-03357 OS command injection in SonicWall SMA100 CVSS 3.1HIGH 8.8
See all 26 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences