Path traversal in SonicWall SMA100
Priority MEDIUM 54CWE-23Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
A relative path traversal vulnerability in the SMA100 upload funtion allows a remote unauthenticated attacker to upload crafted web pages or files as a 'nobody' user. This vulnerability affected SMA 200, 210, 400, 410 and 500v appliances.
Why it matters now
EPSS 0.2515 97th percentileScored 2026-11-07
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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| SonicWall | SonicWall SMA100 | up to 10.2.0.8-37sv; up to 10.2.1.1-19sv; up to 10.2.1.2-24sv | — | No fix listed | CNA |
- SonicWall SMA100 VendorSonicWall Affected up to 10.2.0.8-37sv; up to 10.2.1.1-19sv; up to 10.2.1.2-24sv Fixed in — No fix listed CNA
CPE configurations NVD · 15
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:sonicwall:sma_200_firmware:10.2.0.8-37sv:*:*:*:*:*:*:* | 10.2.0.8-37sv | Vulnerable | SonicWall |
| cpe:2.3:o:sonicwall:sma_200_firmware:10.2.1.1-19sv:*:*:*:*:*:*:* | 10.2.1.1-19sv | Vulnerable | SonicWall |
| cpe:2.3:h:sonicwall:sma_200:-:*:*:*:*:*:*:* | not specified by NVD | Running on | SonicWall |
| cpe:2.3:o:sonicwall:sma_210_firmware:10.2.0.8-37sv:*:*:*:*:*:*:* | 10.2.0.8-37sv | Vulnerable | SonicWall |
| cpe:2.3:o:sonicwall:sma_210_firmware:10.2.1.1-19sv:*:*:*:*:*:*:* | 10.2.1.1-19sv | Vulnerable | SonicWall |
| cpe:2.3:h:sonicwall:sma_210:-:*:*:*:*:*:*:* | not specified by NVD | Running on | SonicWall |
| cpe:2.3:o:sonicwall:sma_410_firmware:10.2.0.8-37sv:*:*:*:*:*:*:* | 10.2.0.8-37sv | Vulnerable | SonicWall |
| cpe:2.3:o:sonicwall:sma_410_firmware:10.2.1.1-19sv:*:*:*:*:*:*:* | 10.2.1.1-19sv | Vulnerable | SonicWall |
| cpe:2.3:h:sonicwall:sma_410:-:*:*:*:*:*:*:* | not specified by NVD | Running on | SonicWall |
| cpe:2.3:o:sonicwall:sma_400_firmware:10.2.0.8-37sv:*:*:*:*:*:*:* | 10.2.0.8-37sv | Vulnerable | SonicWall |
- cpe:2.3:o:sonicwall:sma_200_firmware:10.2.0.8-37sv:*:*:*:*:*:*:* Versions 10.2.0.8-37sv Vulnerable ·SonicWall
- cpe:2.3:o:sonicwall:sma_200_firmware:10.2.1.1-19sv:*:*:*:*:*:*:* Versions 10.2.1.1-19sv 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:10.2.0.8-37sv:*:*:*:*:*:*:* Versions 10.2.0.8-37sv Vulnerable ·SonicWall
- cpe:2.3:o:sonicwall:sma_210_firmware:10.2.1.1-19sv:*:*:*:*:*:*:* Versions 10.2.1.1-19sv Vulnerable ·SonicWall
- cpe:2.3:h:sonicwall:sma_210:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·SonicWall
- cpe:2.3:o:sonicwall:sma_410_firmware:10.2.0.8-37sv:*:*:*:*:*:*:* Versions 10.2.0.8-37sv Vulnerable ·SonicWall
- cpe:2.3:o:sonicwall:sma_410_firmware:10.2.1.1-19sv:*:*:*:*:*:*:* Versions 10.2.1.1-19sv Vulnerable ·SonicWall
- cpe:2.3:h:sonicwall:sma_410:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·SonicWall
- cpe:2.3:o:sonicwall:sma_400_firmware:10.2.0.8-37sv:*:*:*:*:*:*:* Versions 10.2.0.8-37sv Vulnerable ·SonicWall
Show 5 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:sonicwall:sma_400_firmware:10.2.1.1-19sv:*:*:*:*:*:*:* | 10.2.1.1-19sv | Vulnerable | SonicWall |
| cpe:2.3:h:sonicwall:sma_400:-:*:*:*:*:*:*:* | not specified by NVD | Running on | SonicWall |
| cpe:2.3:o:sonicwall:sma_500v_firmware:10.2.0.8-37sv:*:*:*:*:*:*:* | 10.2.0.8-37sv | Vulnerable | SonicWall |
| cpe:2.3:o:sonicwall:sma_500v_firmware:10.2.1.1-19sv:*:*:*:*:*:*:* | 10.2.1.1-19sv | Vulnerable | SonicWall |
| cpe:2.3:h:sonicwall:sma_500v:-:*:*:*:*:*:*:* | not specified by NVD | Running on | SonicWall |
- cpe:2.3:o:sonicwall:sma_400_firmware:10.2.1.1-19sv:*:*:*:*:*:*:* Versions 10.2.1.1-19sv Vulnerable ·SonicWall
- cpe:2.3:h:sonicwall:sma_400:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·SonicWall
- cpe:2.3:o:sonicwall:sma_500v_firmware:10.2.0.8-37sv:*:*:*:*:*:*:* Versions 10.2.0.8-37sv Vulnerable ·SonicWall
- cpe:2.3:o:sonicwall:sma_500v_firmware:10.2.1.1-19sv:*:*:*:*:*:*:* Versions 10.2.1.1-19sv Vulnerable ·SonicWall
- cpe:2.3:h:sonicwall:sma_500v:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·SonicWall
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-20040
- 2026-10-03 Alias added: GHSA-f8vh-ph3q-qhmc
References
More SonicWall Sma 200 Firmware vulnerabilities
- 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
Sources
- CVE-2021-20040 · CVE Program
- CVE-2021-20040 · NVD
- FIRST EPSS
- GHSA-f8vh-ph3q-qhmc · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences