TOTOLINK A702R/A3002R/A3002RU HTTP POST Request formStats sub_40BE30 buffer overflow
Priority MEDIUM 41CWE-119Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.
Summary
A vulnerability classified as critical was found in TOTOLINK A702R, A3002R and A3002RU 3.0.0-B20230809.1615. Affected by this vulnerability is the function sub_40BE30 of the file /boafrm/formStats of the component HTTP POST Request Handler. The manipulation of the argument submit-url leads to buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00849 58th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
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 |
|---|---|---|---|---|---|
| TOTOLINK | A702R | 3.0.0-B20230809.1615 | — | No fix listed | CNA |
| TOTOLINK | A3002R | 3.0.0-B20230809.1615 | — | No fix listed | CNA |
| TOTOLINK | A3002RU | 3.0.0-B20230809.1615 | — | No fix listed | CNA |
- A702R VendorTOTOLINK Affected 3.0.0-B20230809.1615 Fixed in — No fix listed CNA
- A3002R VendorTOTOLINK Affected 3.0.0-B20230809.1615 Fixed in — No fix listed CNA
- A3002RU VendorTOTOLINK Affected 3.0.0-B20230809.1615 Fixed in — No fix listed CNA
CPE configurations NVD · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:totolink:a702r_firmware:3.0.0-b20230809.1615:*:*:*:*:*:*:* | 3.0.0-b20230809.1615 | Vulnerable | TOTOLINK |
| cpe:2.3:h:totolink:a702r:-:*:*:*:*:*:*:* | not specified by NVD | Running on | TOTOLINK |
| cpe:2.3:o:totolink:a3002r_firmware:3.0.0-b20230809.1615:*:*:*:*:*:*:* | 3.0.0-b20230809.1615 | Vulnerable | TOTOLINK |
| cpe:2.3:h:totolink:a3002r:-:*:*:*:*:*:*:* | not specified by NVD | Running on | TOTOLINK |
| cpe:2.3:o:totolink:a3002ru_firmware:3.0.0-b20230809.1615:*:*:*:*:*:*:* | 3.0.0-b20230809.1615 | Vulnerable | TOTOLINK |
| cpe:2.3:h:totolink:a3002ru:-:*:*:*:*:*:*:* | not specified by NVD | Running on | TOTOLINK |
- cpe:2.3:o:totolink:a702r_firmware:3.0.0-b20230809.1615:*:*:*:*:*:*:* Versions 3.0.0-b20230809.1615 Vulnerable ·TOTOLINK
- cpe:2.3:h:totolink:a702r:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·TOTOLINK
- cpe:2.3:o:totolink:a3002r_firmware:3.0.0-b20230809.1615:*:*:*:*:*:*:* Versions 3.0.0-b20230809.1615 Vulnerable ·TOTOLINK
- cpe:2.3:h:totolink:a3002r:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·TOTOLINK
- cpe:2.3:o:totolink:a3002ru_firmware:3.0.0-b20230809.1615:*:*:*:*:*:*:* Versions 3.0.0-b20230809.1615 Vulnerable ·TOTOLINK
- cpe:2.3:h:totolink:a3002ru:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·TOTOLINK
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-4829
- 2026-10-03 Alias added: GHSA-h9vw-8pf3-5j78
References
More TOTOLINK A3002r Firmware vulnerabilities
- TI-2025-35057 TOTOLINK-A3002R v4.0.0-B20230531.1404 was discovered to contain a command injection… CVSS 3.1CRITICAL 9.8
- TI-2025-28880 TOTOLINK A3002R v4.0.0-B20230531.1404 was discovered to contain a buffer overflow via the… CVSS 3.1CRITICAL 9.8
- TI-2025-28878 TOTOLINK A3002R v4.0.0-B20230531.1404 was discovered to contain a buffer overflow via the… CVSS 3.1CRITICAL 9.8
- TI-2025-28876 TOTOLINK A3002R v4.0.0-B20230531.1404 was discovered to contain a buffer overflow via the… CVSS 3.1CRITICAL 9.8
- TI-2025-28874 TOTOLINK A3002R v4.0.0-B20230531.1404 was discovered to contain a command injection… CVSS 3.1CRITICAL 9.8
- TI-2025-19054 TOTOLINK A3002R V4.0.0-B20230531.1404 is vulnerable to Command Injection in /bin/boa via bandstr. CVSS 3.1CRITICAL 9.8
Sources
- CVE-2025-4829 · CVE Program
- CVE-2025-4829 · NVD
- FIRST EPSS
- GHSA-h9vw-8pf3-5j78 · 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