TOTOLINK N600R/X2000R FTP Service vsftpd.conf least privilege violation
Priority LOW 39CWE-266Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Privilege escalation
- 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-266.
Summary
A vulnerability, which was classified as critical, was found in TOTOLINK N600R and X2000R 1.0.0.1. This affects an unknown part of the file vsftpd.conf of the component FTP Service. The manipulation leads to least privilege violation. It is possible to initiate the attack remotely.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01116 66th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
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
- 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 |
|---|---|---|---|---|---|
| TOTOLINK | N600R | 1.0.0.1 | — | No fix listed | CNA |
| TOTOLINK | X2000R | 1.0.0.1 | — | No fix listed | CNA |
- N600R VendorTOTOLINK Affected 1.0.0.1 Fixed in — No fix listed CNA
- X2000R VendorTOTOLINK Affected 1.0.0.1 Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:totolink:n600r_firmware:4.3.0:*:*:*:*:*:*:* | 4.3.0 | Vulnerable | TOTOLINK |
| cpe:2.3:h:totolink:n600r:-:*:*:*:*:*:*:* | not specified by NVD | Running on | TOTOLINK |
| cpe:2.3:o:totolink:x2000r_firmware:1.0.0:*:*:*:*:*:*:* | 1.0.0 | Vulnerable | TOTOLINK |
| cpe:2.3:h:totolink:x2000r:-:*:*:*:*:*:*:* | not specified by NVD | Running on | TOTOLINK |
- cpe:2.3:o:totolink:n600r_firmware:4.3.0:*:*:*:*:*:*:* Versions 4.3.0 Vulnerable ·TOTOLINK
- cpe:2.3:h:totolink:n600r:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·TOTOLINK
- cpe:2.3:o:totolink:x2000r_firmware:1.0.0:*:*:*:*:*:*:* Versions 1.0.0 Vulnerable ·TOTOLINK
- cpe:2.3:h:totolink:x2000r:-:*:*:*:*:*:*:* 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-2025-8181
- 2026-10-03 Alias added: GHSA-2j2w-6vxv-4p23
References
More TOTOLINK N600r Firmware vulnerabilities
- TI-2025-32319 TOTOLINK N600R V4.3.0cu.7647_B20210106 was discovered to contain a command injection… CVSS 3.1CRITICAL 9.8
- TI-2025-28923 Buffer Overflow vulnerability in TOTOLINK N600R v4.3.0cu.7866_B2022506 allows a remote… CVSS 3.1CRITICAL 9.8
- TI-2025-10484 TOTOLINK N600R HTTP Request cstecgi.cgi setWiFiBasicConfig buffer overflow CVSS 4.0HIGH 8.7
- TI-2025-04012 TOTOLINK T10/A3100R/A950RG/A800R/N600R/A3000RU/A810R cstecgi.cgi CloudACMunualUpdate buffer overflow CVSS 4.0HIGH 8.7
- TI-2025-37647 A NULL pointer dereference in the main function of TOTOLINK N600R v4.3.0cu.7866_B20220506… CVSS 3.1HIGH 7.5
- TI-2025-37646 TOTOLINK N600R v4.3.0cu.7866_B20220506 was discovered to contain a stack overflow in the… CVSS 3.1HIGH 7.5
Sources
- CVE-2025-8181 · CVE Program
- CVE-2025-8181 · NVD
- FIRST EPSS
- GHSA-2j2w-6vxv-4p23 · GitHub Advisory Database · CC BY 4.0
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