CVE•Published 2026-06-08•Modified 2026-07-23•1 article on news•6 live references•NVD data

CVE-2026-11556

Vulnerability data via NVD (ingested)

CVSS v3.1

8.8

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS percentile

Exploit Prediction Scoring System · top 27% of all CVEs

Weaknesses (CWE)

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Description

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.

Timeline

Published 2026-06-08

Modified 2026-07-23

External references

NVD MITRE Exploit-DB GitHub PoC trickest/cve VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-11556

Hosts Shodan has explicitly fingerprinted as vulnerable.

More intel sources (5)

Shodan report

vuln:CVE-2026-11556

Country / ASN / product breakdown for the vuln query.

Censys

vulnerabilities.cve_id: CVE-2026-11556

Censys host search filtered to this CVE id.

grep.app

CVE-2026-11556