TOTOLINK A702R formFilter sub_4162DC buffer overflow
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 was detected in TOTOLINK A702R 4.0.0-B20211108.1423. Affected by this vulnerability is the function sub_4162DC of the file /boafrm/formFilter. The manipulation of the argument ip6addr results in buffer overflow. It is possible to launch the attack remotely. The exploit is now public and may be used.
Why it matters now
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 | 4.0.0-B20211108.1423 | — | No fix listed | CNA |
- A702R VendorTOTOLINK Affected 4.0.0-B20211108.1423 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-9779
- 2026-10-03 Alias added: GHSA-ph9m-5932-3v52
- 2026-10-06 EPSS moved to the 50th–90th percentile
References
More TOTOLINK A702r Firmware vulnerabilities
- TI-2025-08972 TOTOLINK A702R formParentControl sub_418030 buffer overflow CVSS 4.0HIGH 8.7
- TI-2025-07446 TOTOLINK A702R HTTP POST Request formWlanMultipleAP buffer overflow CVSS 4.0HIGH 8.7
- TI-2025-06310 TOTOLINK A702R HTTP POST Request formParentControl buffer overflow CVSS 4.0HIGH 8.7
- TI-2025-06199 TOTOLINK A702R HTTP POST Request formWlSiteSurvey buffer overflow CVSS 4.0HIGH 8.7
- TI-2025-05794 TOTOLINK A702R/A3002R/A3002RU/EX1200T HTTP POST Request formIPv6Addr buffer overflow CVSS 4.0HIGH 8.7
- TI-2025-05557 TOTOLINK A702R HTTP POST Request formSysLog buffer overflow CVSS 4.0HIGH 8.7
Sources
- CVE-2025-9779 · CVE Program
- CVE-2025-9779 · NVD
- FIRST EPSS
- GHSA-ph9m-5932-3v52 · 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