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CVE-2021-21892

Published: Dec 22, 2021Updated: Nov 21, 2024 Sources: CVE List NVDCWE-121
NVD MITRE
9.9CVSSCRITICAL
EPSS Score
30.4%
Top 2.0%
CISA KEV
Not in KEV
Exploits
1 Known
Remediation
No Fix Available

Description

A stack-based buffer overflow vulnerability exists in the Web Manager FsUnmount functionality of Lantronix PremierWave 2050 8.9.0.0R4 (in QEMU). A specially crafted HTTP request can lead to remote code execution. An attacker can make an authenticated HTTP request to trigger this vulnerability.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:CC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-121CWE-787

Affected Products

premierwave 2050 firmwarelantronix
EmbeddedFirmware
Networking Infrastructure
Lantronixn/a
lantronixcommercialNetworking Infrastructureaka premierwave 2050 firmware, eds5008 firmware, eds5016 firmware

Attack Graph

Products CVE Techniques Tactics

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Exploitability

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

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MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://talosintelligence.com/vulnerability_reports/TALOS-2021-1335
talosintelligence.com

Timeline

Published
Dec 22, 2021
Last Updated
Nov 21, 2024

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