CVE•Published 2026-04-08•Modified 2026-04-13•1 article on news•6 live references•NVD data

CVE-2025-52221Tenda · Ac6_firmware

Vulnerability data via NVD (ingested)

CVSS v3.1

9.8

CRITICAL

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

EPSS percentile

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Weaknesses (CWE)

CWE-787Out-of-bounds Write CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

Description

Tenda AC6 15.03.05.16_multi is vulnerable to Buffer Overflow in the formSetCfm function via the funcname, funcpara1, and funcpara2 parameters.

Timeline

Published 2026-04-08

Modified 2026-04-13

External references

NVD MITRE Exploit-DB GitHub PoC Sploitus 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-2025-52221

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · OS

os:"Ac6 Firmware"

Hosts Shodan identified as running Ac6 Firmware.

More intel sources (5)

Shodan report

vuln:CVE-2025-52221

Country / ASN / product breakdown for the vuln query.

Censys

vulnerabilities.cve_id: CVE-2025-52221

Censys host search filtered to this CVE id.

grep.app

CVE-2025-52221

Public source-code mentions — fast PoC discovery.

GitHub code

CVE-2025-52221

GitHub code search for direct mentions.

Google dork

"CVE-2025-52221" exploit -site:nvd.nist.gov

Write-ups and news, NVD excluded.

Known PoCs on GitHub

No public proof-of-concept repositories found for CVE-2025-52221 on GitHub.