CVE•Published 2021-11-04•Modified 2026-07-09•1 article on news•6 live references•NVD data
CVE-2020-25367Dlink · Dir-823g_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
96
Exploit Prediction Scoring System · top 4% of all CVEs
Weaknesses (CWE)
Description
A command injection vulnerability was discovered in the HNAP1 protocol in D-Link DIR-823G devices with firmware V1.0.2B05. An attacker is able to execute arbitrary web scripts via shell metacharacters in the Captcha field to Login.
Timeline
Published 2021-11-04
Modified 2026-07-09
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-2020-25367Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · OS
os:"Dir-823g Firmware"Hosts Shodan identified as running Dir-823g Firmware.
More intel sources (5)
Shodan report
vuln:CVE-2020-25367Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2020-25367Censys host search filtered to this CVE id.
grep.app
CVE-2020-25367Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2020-25367GitHub code search for direct mentions.
Google dork
"CVE-2020-25367" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2020-25367 on GitHub.