Sapido BR270n/BRC76n/GR297/RB1732 syscmd.htm os command injection
Priority HIGH 71CWE-707Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-78.
Summary
A vulnerability was found in Sapido BR270n, BRC76n, GR297 and RB1732 and classified as critical. Affected by this issue is some unknown functionality of the file ip/syscmd.htm. The manipulation leads to os command injection. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-214592.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.03151 88th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Sapido | BR270n | all versions | — | No fix listed | CNA |
| Sapido | BRC76n | all versions | — | No fix listed | CNA |
| Sapido | GR297 | all versions | — | No fix listed | CNA |
| Sapido | RB1732 | all versions | — | No fix listed | CNA |
- BR270n VendorSapido Affected all versions Fixed in — No fix listed CNA
- BRC76n VendorSapido Affected all versions Fixed in — No fix listed CNA
- GR297 VendorSapido Affected all versions Fixed in — No fix listed CNA
- RB1732 VendorSapido Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 8
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:sapido:br270n_firmware:2.1.03:*:*:*:*:*:*:* | 2.1.03 | Vulnerable | Sapido |
| cpe:2.3:h:sapido:br270n:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Sapido |
| cpe:2.3:o:sapido:brc76n_firmware:2.1.03:*:*:*:*:*:*:* | 2.1.03 | Vulnerable | Sapido |
| cpe:2.3:h:sapido:brc76n:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Sapido |
| cpe:2.3:o:sapido:gr297n_firmware:2.1.3:*:*:*:*:*:*:* | 2.1.3 | Vulnerable | Sapido |
| cpe:2.3:h:sapido:gr297n:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Sapido |
| cpe:2.3:o:sapido:rb-1732_firmware:2.0.43:*:*:*:*:*:*:* | 2.0.43 | Vulnerable | Sapido |
| cpe:2.3:h:sapido:rb-1732:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Sapido |
- cpe:2.3:o:sapido:br270n_firmware:2.1.03:*:*:*:*:*:*:* Versions 2.1.03 Vulnerable ·Sapido
- cpe:2.3:h:sapido:br270n:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Sapido
- cpe:2.3:o:sapido:brc76n_firmware:2.1.03:*:*:*:*:*:*:* Versions 2.1.03 Vulnerable ·Sapido
- cpe:2.3:h:sapido:brc76n:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Sapido
- cpe:2.3:o:sapido:gr297n_firmware:2.1.3:*:*:*:*:*:*:* Versions 2.1.3 Vulnerable ·Sapido
- cpe:2.3:h:sapido:gr297n:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Sapido
- cpe:2.3:o:sapido:rb-1732_firmware:2.0.43:*:*:*:*:*:*:* Versions 2.0.43 Vulnerable ·Sapido
- cpe:2.3:h:sapido:rb-1732:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Sapido
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-4242
- 2026-10-03 Alias added: GHSA-2gp5-q39j-fmr2
References
Sources
- CVE-2021-4242 · CVE Program
- CVE-2021-4242 · NVD
- FIRST EPSS
- GHSA-2gp5-q39j-fmr2 · 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