On certain TOTOLINK Realtek SDK based routers, an authenticated attacker may execute…
Priority HIGH 73CWE-78Published · 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
On certain TOTOLINK Realtek SDK based routers, an authenticated attacker may execute arbitrary OS commands via the sysCmd parameter to the boafrm/formSysCmd URI, even if the GUI (syscmd.htm) is not available. This allows for full control over the device's internals. This affects A3002RU through 2.0.0, A702R through 2.1.3, N301RT through 2.1.6, N302R through 3.4.0, N300RT through 3.4.0, N200RE through 4.0.0, N150RT through 3.4.0, N100RE through 3.4.0, and N302RE 2.0.2.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.25135 97th percentileScored 2026-11-07
Public exploit Yes 4 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
- 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 |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 16
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:totolink:a3002ru_firmware:*:*:*:*:*:*:*:* | up to 2.0.0 | Vulnerable | TOTOLINK |
| cpe:2.3:h:totolink:a3002ru:-:*:*:*:*:*:*:* | not specified by NVD | Running on | TOTOLINK |
| cpe:2.3:o:totolink:a702r_firmware:*:*:*:*:*:*:*:* | up to 2.1.3 | Vulnerable | TOTOLINK |
| cpe:2.3:h:totolink:a702r:-:*:*:*:*:*:*:* | not specified by NVD | Running on | TOTOLINK |
| cpe:2.3:o:totolink:n301rt_firmware:*:*:*:*:*:*:*:* | up to 2.1.6 | Vulnerable | TOTOLINK |
| cpe:2.3:h:totolink:n301rt:-:*:*:*:*:*:*:* | not specified by NVD | Running on | TOTOLINK |
| cpe:2.3:o:totolink:n302r_firmware:*:*:*:*:*:*:*:* | up to 3.4.0 | Vulnerable | TOTOLINK |
| cpe:2.3:h:totolink:n302r:-:*:*:*:*:*:*:* | not specified by NVD | Running on | TOTOLINK |
| cpe:2.3:o:totolink:n300rt_firmware:*:*:*:*:*:*:*:* | up to 3.4.0 | Vulnerable | TOTOLINK |
| cpe:2.3:h:totolink:n300rt:-:*:*:*:*:*:*:* | not specified by NVD | Running on | TOTOLINK |
- cpe:2.3:o:totolink:a3002ru_firmware:*:*:*:*:*:*:*:* Versions up to 2.0.0 Vulnerable ·TOTOLINK
- cpe:2.3:h:totolink:a3002ru:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·TOTOLINK
- cpe:2.3:o:totolink:a702r_firmware:*:*:*:*:*:*:*:* Versions up to 2.1.3 Vulnerable ·TOTOLINK
- cpe:2.3:h:totolink:a702r:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·TOTOLINK
- cpe:2.3:o:totolink:n301rt_firmware:*:*:*:*:*:*:*:* Versions up to 2.1.6 Vulnerable ·TOTOLINK
- cpe:2.3:h:totolink:n301rt:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·TOTOLINK
- cpe:2.3:o:totolink:n302r_firmware:*:*:*:*:*:*:*:* Versions up to 3.4.0 Vulnerable ·TOTOLINK
- cpe:2.3:h:totolink:n302r:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·TOTOLINK
- cpe:2.3:o:totolink:n300rt_firmware:*:*:*:*:*:*:*:* Versions up to 3.4.0 Vulnerable ·TOTOLINK
- cpe:2.3:h:totolink:n300rt:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·TOTOLINK
Show 6 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:totolink:n200re_firmware:*:*:*:*:*:*:*:* | up to 4.0.0 | Vulnerable | TOTOLINK |
| cpe:2.3:h:totolink:n200re:-:*:*:*:*:*:*:* | not specified by NVD | Running on | TOTOLINK |
| cpe:2.3:o:totolink:n150rt_firmware:*:*:*:*:*:*:*:* | up to 3.4.0 | Vulnerable | TOTOLINK |
| cpe:2.3:h:totolink:n150rt:-:*:*:*:*:*:*:* | not specified by NVD | Running on | TOTOLINK |
| cpe:2.3:o:totolink:n100re_firmware:*:*:*:*:*:*:*:* | up to 3.4.0 | Vulnerable | TOTOLINK |
| cpe:2.3:h:totolink:n100re:-:*:*:*:*:*:*:* | not specified by NVD | Running on | TOTOLINK |
- cpe:2.3:o:totolink:n200re_firmware:*:*:*:*:*:*:*:* Versions up to 4.0.0 Vulnerable ·TOTOLINK
- cpe:2.3:h:totolink:n200re:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·TOTOLINK
- cpe:2.3:o:totolink:n150rt_firmware:*:*:*:*:*:*:*:* Versions up to 3.4.0 Vulnerable ·TOTOLINK
- cpe:2.3:h:totolink:n150rt:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·TOTOLINK
- cpe:2.3:o:totolink:n100re_firmware:*:*:*:*:*:*:*:* Versions up to 3.4.0 Vulnerable ·TOTOLINK
- cpe:2.3:h:totolink:n100re:-:*:*:*:*:*:*:* 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-2019-19824
- 2026-10-03 Alias added: GHSA-mrf4-89gh-pm62
References
Exploit 4
More TOTOLINK A3002ru Firmware vulnerabilities
- TI-2024-22621 TOTOLINK AC1200 Wireless Router A3002RU V2.1.1-B20230720.1011 is vulnerable to Buffer… CVSS 3.1CRITICAL 9.8
- TI-2026-21376 TOTOLINK A3002RU_V3 V3.0.0-B20220304.1804 was discovered to contain a stack-based buffer… CVSS 3.1HIGH 8.8
- TI-2026-21374 TOTOLINK A3002RU V2.1.1-B20211108.1455 was discovered to contain a stack-based buffer… CVSS 3.1HIGH 8.8
- TI-2025-06323 TOTOLINK A3002RU HTTP POST Request formParentControl buffer overflow CVSS 4.0HIGH 8.7
- TI-2025-06309 TOTOLINK A3002RU 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
Sources
- CVE-2019-19824 · CVE Program
- CVE-2019-19824 · NVD
- FIRST EPSS
- GHSA-mrf4-89gh-pm62 · 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