CVE•Published 2021-11-04•Modified 2026-07-09•1 article on news•6 live references•NVD data
CVE-2020-25366Dlink · Dir-823g_firmware
Vulnerability data via NVD (ingested)
CVSS v3.1
9.1
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
EPSS percentile
87
Exploit Prediction Scoring System · top 13% of all CVEs
Weaknesses (CWE)
Description
An issue in the component /cgi-bin/upload_firmware.cgi of D-Link DIR-823G REVA1 1.02B05 allows attackers to cause a denial of service (DoS) via unspecified vectors.
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-2020-25366Hosts 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-2020-25366Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2020-25366Censys host search filtered to this CVE id.
grep.app
CVE-2020-25366Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2020-25366GitHub code search for direct mentions.
Google dork
"CVE-2020-25366" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2020-25366 on GitHub.