CVE-2021-26747
CriticalNetis WF2780 2.3.40404 and WF2411 1.1.29629 devices allow Shell Metacharacter Injection into the ping command, leading to remote code execution.
Published Feb 18, 2021 · Updated Nov 21, 2024
Key Facts
Patch immediately- CVE-2021-26747 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Wf2411 Firmware (Netis-Systems), Wf2780 Firmware (Netis-Systems).
- It is not listed in any known-exploited vulnerabilities catalog. No public exploit code is known.
- EPSS estimates a 55% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
55%
Higher than 99.0% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
None known
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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.
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Wf2411 FirmwareNetis-Systems | 1.1.29629 | n/a |
| Wf2780 FirmwareNetis-Systems | 2.3.40404 | n/a |
Timeline
Publicly disclosed
Feb 18, 2021
Last updated
Nov 21, 2024
Weakness Type
- CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
References
FAQ
Common Questions.
Netis WF2780 2.3.40404 and WF2411 1.1.29629 devices allow Shell Metacharacter Injection into the ping command, leading to remote code execution.
Affected: Wf2411 Firmware (Netis-Systems) versions 1.1.29629; Wf2780 Firmware (Netis-Systems) versions 2.3.40404. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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