ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2026-4543

A vulnerability was found in Wavlink WL-WN578W2 221110.

Published Mar 22, 2026 · catalog updated Jun 17, 2026 · wl-wn578w2 firmware

Check if you run it

No confirmed exploitation is on record for CVE-2026-4543. EPSS is 4.89%. Act only if a listed version of wl-wn578w2 firmware is installed.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Low2.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
4.89%
Remediation
Advisory link
Affected products
cpe wavlink/wl-wn578w2 firmware

A vulnerability was found in Wavlink WL-WN578W2 221110. The impacted element is an unknown function of the file /cgi-bin/firewall.cgi of the component POST Request Handler. Performing a manipulation of the argument dmz_flag/del_flag results in command injection. It is possible to initiate the attack remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe wavlink/wl-wn578w2 firmware221110

How to fix CVE-2026-4543

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-4543. EPSS is 4.89%. Act only if a listed version of wl-wn578w2 firmware is installed.

Which versions are affected?

Compare what you have installed with wavlink/wl-wn578w2 firmware 221110. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-74: Injection; CWE-77: Command Injection. EPSS 4.89%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Mar 22, 2026 · NIST NVD

    Detected

    A vulnerability was found in Wavlink WL-WN578W2 221110. The impacted element is an unknown function of the file /cgi-bin/firewall.cgi of the component POST Request Handler. Performing a manipulation of the argument dmz_flag/del_flag results in command injection. It is possible to initiate the attack remotely. The exploit has been made public and could be used. The vendor was contacted early about

  2. Jun 17, 2026 · NIST NVD

    Updated

    A vulnerability was found in Wavlink WL-WN578W2 221110. The impacted element is an unknown function of the file /cgi-bin/firewall.cgi of the component POST Request Handler. Performing a manipulation of the argument dmz_flag/del_flag results in command injection. It is possible to initiate the attack remotely. The exploit has been made public and could be used. The vendor was contacted early about

Sources

  • CVE.orgVulnerability recordCVE-2026-4543

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-4543

    30-day exploitation probability 4.9%

    first.org
  • NIST NVDVulnerability recordCVE-2026-4543

    A vulnerability was found in Wavlink WL-WN578W2 221110. The impacted element is an unknown function of the file /cgi-bin/firewall.cgi of the component POST Request Handler. Performing a manipulation of the argument dmz_flag/del_flag results in command injection. It is possible to

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.