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TI-2021-20521 Aliases CVE-2021-45420GHSA-mvgm-c55v-5wjw

Emerson Dixell XWEB-500 products are affected by arbitrary file write vulnerability in…

Priority MEDIUM 59CWE-200Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Information disclosure, Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-200 and CWE-306.

Summary

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.

Why it matters now

EPSS 0.1755 97th percentileScored 2026-11-08
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:emerson:dixell_xweb-500_firmware:-:*:*:*:*:*:*:*not specified by NVDVulnerableEmerson
cpe:2.3:h:emerson:dixell_xweb-500:-:*:*:*:*:*:*:*not specified by NVDRunning onEmerson
  • cpe:2.3:o:emerson:dixell_xweb-500_firmware:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Emerson
  • cpe:2.3:h:emerson:dixell_xweb-500:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Emerson

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-45420
  2. 2026-10-03 Alias added: GHSA-mvgm-c55v-5wjw

References

Exploit 1

  • TI-2021-20522 Emerson Dixell XWEB-500 products are affected by information disclosure via directory… CVSS 3.1HIGH 7.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences