What is CVE-2021-45420?

CVE-2021-45420 is a critical-severity vulnerability in Emerson Dixell Xweb-500, classified under Information Disclosure. CVSS score: 9.8/10. Published 2022-02-14.

How severe is CVE-2021-45420?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2021-45420 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in Emerson Dixell Xweb-500

CVE-2021-45420

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.

Vulnerability class: Information Disclosure

EPSS: 0.175 (96.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

af854a3a-2127-422b-91ae-364da2661108 (x_refsource_MISC, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Product, x_refsource_MISC)
cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-45420?: CVE-2021-45420 is a critical-severity vulnerability in Emerson Dixell Xweb-500, classified under Information Disclosure. CVSS score: 9.8/10. Published 2022-02-14.
How severe is CVE-2021-45420?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2021-45420 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.