CVE-2021-26747
CRITICALCVSS 9.8/10EPSS 53.60%
Last modified
CVE-2021-26747 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Netis WF2780 2.3.40404 and WF2411 1.1.29629 devices allow Shell Metacharacter Injection into the ping command, leading to remote code execution.. EPSS estimates a 53.60% chance of exploitation in the next 30 days.
Description
Netis WF2780 2.3.40404 and WF2411 1.1.29629 devices allow Shell Metacharacter Injection into the ping command, leading to remote code execution.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Netis-Systems | Wf2780 Firmware | 2.3.40404 |
| Netis-Systems | Wf2411 Firmware | 1.1.29629 |
References
- http://www.netis-systems.com.tw/Product, Vendor Advisory
- https://github.com/yhstar00/netis-routeExploit, Third Party Advisory
- http://www.netis-systems.com.tw/Product, Vendor Advisory
- https://github.com/yhstar00/netis-routeExploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-26747?
Netis WF2780 2.3.40404 and WF2411 1.1.29629 devices allow Shell Metacharacter Injection into the ping command, leading to remote code execution.
How severe is CVE-2021-26747?
CVE-2021-26747 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 53.60% probability of exploitation in the next 30 days.
How do I fix CVE-2021-26747?
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-2021-26747?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST