CVE-2026-1547
CRITICALCVSS 9.8/10EPSS 2.77%
Last modified
CVE-2026-1547 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. A vulnerability was detected in Totolink A7000R 4.1cu.4154. This affects the function setUnloadUserData of the file /cgi-bin/cstecgi.cgi. EPSS estimates a 2.77% chance of exploitation in the next 30 days.
Description
A vulnerability was detected in Totolink A7000R 4.1cu.4154. This affects the function setUnloadUserData of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument plugin_name results in command injection. It is possible to launch the attack remotely. The exploit is now public and may be used.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Totolink | A7000r Firmware | 4.1cu.4154 |
References
- https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/A7000R/01_RCE_setUnloadUserData_RCE.mdExploit, Third Party Advisory
- https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/A7000R/01_RCE_setUnloadUserData_RCE.md#pocExploit, Third Party Advisory
- https://vuldb.com/?ctiid.343231Permissions Required, VDB Entry
- https://vuldb.com/?id.343231Third Party Advisory, VDB Entry
- https://vuldb.com/?submit.739713Third Party Advisory, VDB Entry
- https://www.totolink.net/Product
- https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/A7000R/01_RCE_setUnloadUserData_RCE.mdExploit, Third Party Advisory
- https://github.com/xyh4ck/iot_poc/blob/main/TOTOLINK/A7000R/01_RCE_setUnloadUserData_RCE.md#pocExploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-1547?
A vulnerability was detected in Totolink A7000R 4.1cu.4154. This affects the function setUnloadUserData of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument plugin_name results in command injection. It is possible to launch the attack remotely. The exploit is now public and may be used.
How severe is CVE-2026-1547?
CVE-2026-1547 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.77% probability of exploitation in the next 30 days.
How do I fix CVE-2026-1547?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2026-1547?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST