CVE•Published 2026-03-16•Modified 2026-04-06•1 article on news•7 live references•NVD data
CVE-2026-4181Dlink · Dir-816_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
—
Weaknesses (CWE)
Description
A security flaw has been discovered in D-Link DIR-816 1.10CNB05. This affects an unknown function of the file /goform/form2RepeaterStep2.cgi of the component goahead. The manipulation of the argument key1/key2/key3/key4/pskValue results in stack-based buffer overflow. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks. This vulnerability only affects products that are no longer supported by the maintainer.
Timeline
Published 2026-03-16
Modified 2026-04-06
External references
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-2026-4181Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · OS
os:"Dir-816 Firmware"Hosts Shodan identified as running Dir-816 Firmware.
More intel sources (5)
Shodan report
vuln:CVE-2026-4181Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2026-4181Censys host search filtered to this CVE id.
grep.app
CVE-2026-4181Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2026-4181GitHub code search for direct mentions.
Google dork
"CVE-2026-4181" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2026-4181 on GitHub.