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TI-2021-04923 Aliases CVE-2021-21878GHSA-6fw5-96cf-75p5

Exposure of resource to wrong sphere in Lantronix

Priority LOW 25CWE-668Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-668 and the CVSS impact.

Summary

A local file inclusion vulnerability exists in the Web Manager Applications and FsBrowse functionality of Lantronix PremierWave 2050 8.9.0.0R4. A specially-crafted series of HTTP requests can lead to local file inclusion. An attacker can make a series of authenticated HTTP requests to trigger this vulnerability.

Why it matters now

EPSS 0.01243 69th percentileScored 2026-11-07
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
—LantronixLantronix PremierWave 2050 8.9.0.0R4 (in QEMU)—No fix listedCNA
  • Lantronix Vendor— Affected Lantronix PremierWave 2050 8.9.0.0R4 (in QEMU) Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:lantronix:premierwave_2050_firmware:8.9.0.0:r4:*:*:*:*:*:*8.9.0.0 r4VulnerableLantronix
cpe:2.3:h:lantronix:premierwave_2050:-:*:*:*:*:*:*:*not specified by NVDRunning onLantronix
  • cpe:2.3:o:lantronix:premierwave_2050_firmware:8.9.0.0:r4:*:*:*:*:*:* Versions 8.9.0.0 r4 Vulnerable ·Lantronix
  • cpe:2.3:h:lantronix:premierwave_2050:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Lantronix

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-21878
  2. 2026-10-03 Alias added: GHSA-6fw5-96cf-75p5

References

Exploit 1

  • TI-2021-04926 OS command injection in Lantronix CVSS 3.1CRITICAL 9.9
  • TI-2021-04937 Stack-based buffer overflow in Lantronix CVSS 3.1CRITICAL 9.9
  • TI-2021-04928 OS command injection in Lantronix CVSS 3.1CRITICAL 9.9
  • TI-2021-04917 OS command injection in Lantronix CVSS 3.1CRITICAL 9.9
  • TI-2021-04934 Stack-based buffer overflow in Lantronix CVSS 3.1CRITICAL 9.9
  • TI-2021-04929 OS command injection in Lantronix CVSS 3.1CRITICAL 9.1
See all 22 →

Sources

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