ZDF
Sign inSign up

Vulnerabilities

Vulnerability · CVE-2025-4076

A vulnerability classified as critical has been found in LB-LINK BL-AC3600 up to 1.0.22.

Published Apr 29, 2025 · catalog updated Apr 29, 2025 · LB-LINK BL-AC3600

Check this week

CVE-2025-4076 is not in CISA KEV. FIRST estimates a 19.77% chance of exploitation in the next 30 days. Check whether you run LB-LINK BL-AC3600.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium5.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
19.77%
Remediation
Vendor / distro source
Affected products
vendor LB-LINK BL-AC3600 1.0.4

A vulnerability classified as critical has been found in LB-LINK BL-AC3600 up to 1.0.22. This affects the function easy_uci_set_option_string_0 of the file /cgi-bin/lighttpd.cgi of the component Password Handler. The manipulation of the argument routepwd leads to command injection. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may 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.

  • vendor LB-LINK BL-AC3600 1.0.41.0.4

How to fix CVE-2025-4076

What to do

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

Should you patch?

CVE-2025-4076 is not in CISA KEV. FIRST estimates a 19.77% chance of exploitation in the next 30 days. Check whether you run LB-LINK BL-AC3600.

Which versions are affected?

Compare what you have installed with LB-LINK BL-AC3600 1.0.4 1.0.4. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 19.77%. 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.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 29, 2025 · EUVD

    Detected

    A vulnerability classified as critical has been found in LB-LINK BL-AC3600 up to 1.0.22. This affects the function easy_uci_set_option_string_0 of the file /cgi-bin/lighttpd.cgi of the component Password Handler. The manipulation of the argument routepwd leads to command injection. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The ven

  2. Apr 29, 2025 · EUVD

    Updated

    A vulnerability classified as critical has been found in LB-LINK BL-AC3600 up to 1.0.22. This affects the function easy_uci_set_option_string_0 of the file /cgi-bin/lighttpd.cgi of the component Password Handler. The manipulation of the argument routepwd leads to command injection. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The ven

Sources

  • CVE.orgVulnerability recordCVE-2025-4076

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-4076

    30-day exploitation probability 19.8%

    first.org
  • EUVDVulnerability recordEUVD-2025-12618

    A vulnerability classified as critical has been found in LB-LINK BL-AC3600 up to 1.0.22. This affects the function easy_uci_set_option_string_0 of the file /cgi-bin/lighttpd.cgi of the component Password Handler. The manipulation of the argument routepwd leads to command injectio

    euvd.enisa.europa.eu

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.