THREATPORT/VULNERABILITY/CVE-2021-45420
CRITICAL SEVERITY

CVE-2021-45420

Dixell Xweb 500 Firmware vulnerability

CVSS
9.8
EPSS
17.5%
EPSS pct
97th
Exploited
No known
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.
Affected vendor
Emerson
Affected product
Dixell Xweb 500 Firmware
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness type (CWE)
  • CWE-200 — Exposure of Sensitive Information
  • CWE-306 — Missing Authentication for Critical Function
  • CWE-668 — Exposure of Resource to Wrong Sphere
Published
2022-02-14

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 17.5% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 97% of all scored CVEs.

Check your external exposure to CVE-2021-45420

  • Confirm whether Emerson Dixell Xweb 500 Firmware is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2021-45420.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-45420

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