CVE•Published 2022-02-14•Modified 2026-07-09•1 article on news•6 live references•NVD data
CVE-2021-45420Emerson · Dixell_xweb-500_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
98
Exploit Prediction Scoring System · top 2% of all CVEs
Weaknesses (CWE)
Description
Emerson Dixell XWEB-500 products are affected by arbitrary file write vulnerability in /cgi-bin/logo_extra_upload.cgi, /cgi-bin/cal_save.cgi, and /cgi-bin/lo_utils.cgi. An attacker will be able to write any file on the target system without any kind of authentication mechanism, and this can lead to denial of service and potentially remote code execution. Note: the product has not been supported since 2018 and should be removed or replaced.
Timeline
Published 2022-02-14
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-2021-45420Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · OS
os:"Dixell Xweb-500 Firmware"Hosts Shodan identified as running Dixell Xweb-500 Firmware.
More intel sources (5)
Shodan report
vuln:CVE-2021-45420Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2021-45420Censys host search filtered to this CVE id.
grep.app
CVE-2021-45420Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2021-45420GitHub code search for direct mentions.
Google dork
"CVE-2021-45420" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.
Known PoCs on GitHub
No public proof-of-concept repositories found for CVE-2021-45420 on GitHub.