CVE-2021-21881Lantronix OS Command Injection
An OS command injection vulnerability exists in the Web Manager Wireless Network Scanner functionality of Lantronix PremierWave 2050 8.9.0.0R4.
Published Dec 22, 2021 · Updated Nov 21, 2024
Key Facts
Patch immediately- CVE-2021-21881 is a critical-severity vulnerability (CVSS 9.9 v3.1) affecting Premierwave 2050 Firmware (Lantronix), Lantronix.
- It is exploited in the wild, listed in Industry KEV feed since Aug 19, 2022. No public exploit code is known.
- EPSS estimates a 37% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Scores
CVSS v3.1
9.9
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
37%
Higher than 98.5% of all scored CVEs
Exploit maturity
Exploited (KEV)
ATLAS score
51/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Aug 19, 2022
240 days after publication
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Exploited (KEV)
Public exploit code
0
Proof-of-concept links
In-the-wild evidence
3
Reports of active use
Description
An OS command injection vulnerability exists in the Web Manager Wireless Network Scanner functionality of Lantronix PremierWave 2050 8.9.0.0R4. A specially-crafted HTTP request can lead to command execution. An attacker can make an authenticated HTTP request to trigger this vulnerability.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Aug 19, 2022 | n/a | Not reported |
Affected Products
2 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Premierwave 2050 FirmwareLantronix | 8.9.0.0-r4 | n/a |
| Lantronix | >= Lantronix PremierWave 2050 8.9.0.0R4 (in QEMU) | n/a |
Timeline
Publicly disclosed
Dec 22, 2021
Added to Industry KEV feed
Aug 19, 2022
Last updated
Nov 21, 2024
Weakness Type
- CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
References
FAQ
Common Questions.
An OS command injection vulnerability exists in the Web Manager Wireless Network Scanner functionality of Lantronix PremierWave 2050 8.9.0.0R4.
Affected: Premierwave 2050 Firmware (Lantronix) versions 8.9.0.0-r4; Lantronix versions >= Lantronix PremierWave 2050 8.9.0.0R4 (in QEMU). The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Aug 19, 2022.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
No public exploit code is known.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Is CVE-2021-21881 On Your Attack Surface?
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