CVE-2026-11556: Tenda F451 Web Management WriteFacMac formWriteFacMac os command injection
- Is it exploited?
Reported, not confirmed by CISA. VulnCheck KEV lists it as exploited in the wild. CISA has not added it to its Known Exploited Vulnerabilities catalog as of .
VulnCheck KEV lists it since . VulnCheck's own honeypots also recorded exploitation attempts.
- How likely is exploitation in the next 30 days?
- 1.6%
EPSS score, percentile 76.3 of all scored records. A probability estimated by FIRST, not a report of exploitation.
CISA's SSVC assessment in the CVE record lists exploitation as poc.
- How severe?
- 8.7 High
CVSS v4.0 base score, given by the CNA
- What should I do?
CISA has set no required action, because the vulnerability is not in KEV.
No patch or vendor advisory is listed in the CVE record. Check Tenda's advisories.
A public exploit is linked in the references.
- Which versions are affected?
Affected
- 1.0.0.7
- 1.0.0.9
Source: CISA KEV 2026.11.10, as of ; VulnCheck KEV, as of ; FIRST EPSS, as of ; CVE List, as of . About the data.
Description
Tenda F451 Web Management WriteFacMac formWriteFacMac os command injection
A security flaw has been discovered in Tenda F451 1.0.0.7/1.0.0.9. Impacted is the function formWriteFacMac of the file /goform/WriteFacMac of the component Web Management Interface. Performing a manipulation of the argument mac results in os command injection. Remote exploitation of the attack is possible. The exploit has been released to the public and may be used for attacks.
Source: CVE List, as of . About the data.
What to do
Advisories and patches
No patch, vendor advisory or mitigation is listed in the CVE record. Check Tenda's own security advisories for a fix, and compare your version with the affected versions below.
A public exploit is linked in the references.
This summary is based on the CVE record as of . Check the vendor's advisory before you act: affected versions and fixes can change.
Affected products and versions
Versions by product, as listed in the CVE record (1 product)
| Status | Versions |
|---|---|
| Affected | 1.0.0.7 |
| Affected | 1.0.0.9 |
Source: CVE List, as of . About the data.
Weakness
CWE-78, CWE-77
CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record.
Timeline
| Date | Event |
|---|---|
| CVE record published | |
| CVE record last updated |
References
6
Known exploited Tenda vulnerabilities
- CVE-2018-14558: Tenda AC7, AC9, and AC10 Routers Command Injection Vulnerability
- CVE-2020-10987: Tenda AC1900 Router AC15 Model Remote Code Execution Vulnerability
- CVE-2021-31755: Tenda AC11 Router Stack Buffer Overflow Vulnerability