Which products and versions are affected by CVE-2022-2487?

Affected: Wl-Wn535k2 Firmware (Wavlink); Wl-Wn535k3 Firmware (Wavlink); WN535K2 versions >= n/a, among others. The full list is in the CVE brief.

Is CVE-2022-2487 being exploited in the wild?

It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Oct 14, 2023.

Is CVE-2022-2487 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-2022-2487?

Public exploit code is available.

Is there a fix for CVE-2022-2487?

No fixed version is listed yet; check the vendor advisory for mitigations.

How urgently should CVE-2022-2487 be patched?

Brandefense priority: patch immediately, because it is listed as exploited in the wild.

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Vulnerability Intelligence

CVE-2022-2487

CriticalExploitedPublic exploit

The manipulation of the argument start_hour leads to os command injection.

Published Jul 20, 2022 · Updated Apr 15, 2025

Key Facts

Patch immediately

CVE-2022-2487 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Wl-Wn535k2 Firmware (Wavlink), Wl-Wn535k3 Firmware (Wavlink), WN535K2 and 1 more product.
It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Oct 14, 2023. Public exploit code is available.
EPSS estimates a 79% 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.

CVSS v3.1

9.8

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS (30-day exploit likelihood)

79%

Higher than 99.5% of all scored CVEs

Exploited in the wild

Yes

2 catalog listings

Public exploit code

Available

Proof-of-concept or weaponized module

Get the full CVE-2022-2487 brief as a PDF

Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.

Description

A vulnerability has been found in WAVLINK WN535K2 and WN535K3 and classified as critical. This vulnerability affects unknown code of the file /cgi-bin/nightled.cgi. The manipulation of the argument start_hour leads to os command injection. The exploit has been disclosed to the public and may be used.

Known-Exploited Catalog Listings

Catalog	Added	Remediation due	Ransomware use
Industry KEV feed	Nov 14, 2023	n/a	Not reported
CIRCL KEV	Oct 14, 2023	n/a	Not reported

Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Affected Products

4 affected entries in total

Product	Affected versions	Fixed in
Wl-Wn535k2 FirmwareWavlink	See advisory	n/a
Wl-Wn535k3 FirmwareWavlink	See advisory	n/a
WN535K2	>= n/a	n/a
WN535K3	>= n/a	n/a

Timeline

Publicly disclosed
Jul 20, 2022
Added to CIRCL KEV
Oct 14, 2023
Added to Industry KEV feed
Nov 14, 2023
Last updated
Apr 15, 2025

Weakness Type

CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

References

6 more references in the full CVE brief

FAQ

Common Questions.

A vulnerability has been found in WAVLINK WN535K2 and WN535K3 and classified as critical.
Affected: Wl-Wn535k2 Firmware (Wavlink); Wl-Wn535k3 Firmware (Wavlink); WN535K2 versions >= n/a, among others. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Oct 14, 2023.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
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-2022-2487 Running On Your Attack Surface?

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