Security readout for executives and security teams
Plain-English summary
This issue affects WAVLINK WN535K2 and WN535K3 devices. A logged-in user on an adjacent network could abuse the night LED CGI endpoint to run operating-system commands. That can compromise confidentiality, integrity, and availability of the device. Public exploit information exists, but the supplied sources do not show confirmed active exploitation.
Executive priority
Treat this as high priority for sites using the affected WAVLINK models, especially in business networks. The risk is device takeover from nearby network access, and public exploit information raises urgency. Prioritize discovery, access restriction, and vendor-guided remediation.
Technical view
CVE-2022-2487 is CWE-78 OS command injection in /cgi-bin/nightled.cgi, triggered through the start_hour argument. CVSS 3.1 is 8.0, with adjacent-network access, low privileges, no user interaction, and high impact to confidentiality, integrity, and availability. Affected firmware versions and vendor fixes are not specified in the supplied data.
Likely exposure
Exposure is most likely where affected WAVLINK WN535K2 or WN535K3 administration interfaces are reachable from Wi-Fi or local adjacent networks. Internet exposure is not stated in the CVSS vector or supplied sources.
Exploitation context
The exploit has been publicly disclosed and may be used, according to the source bundle. KEV is false, so there is no supplied evidence of known active exploitation. The attack requires adjacent-network access and low privileges.
Researcher notes
Key gaps remain: affected firmware versions, exact vulnerable code path beyond start_hour, and official remediation are not provided. Validation should focus on authenticated configuration review, exposure mapping, and vendor confirmation rather than reproducing command injection.
Mitigation direction
- Identify any WAVLINK WN535K2 or WN535K3 devices in use.
- Restrict administrative access to trusted management networks only.
- Check WAVLINK or device support channels for firmware guidance or replacement advice.
- Disable or remove affected devices if they cannot be secured.
- Monitor network and device logs for unexpected administrative activity.
Validation and detection
- Confirm device model and firmware from asset inventory or administrative UI.
- Verify whether management interfaces are reachable from adjacent wireless or LAN segments.
- Review vendor guidance for CVE-2022-2487 or nightled.cgi updates.
- Check logs for suspicious authenticated access to nightled.cgi.
- Avoid exploit-payload testing on production devices without authorization.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-78: Command execution behavior lookup
Command injection weaknesses can lead defenders to review execution techniques and command interpreter telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2022-2487 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H2.15.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8HighVector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/1angx/webray.com.cn/blob/main/Wavlink/Wavlink%20nightled.cgi%20.mdCVE reference · x_refsource_MISC
- https://vuldb.com/?id.204538CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.