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Vulnerabilities

Vulnerability · CVE-2018-20872

i-lan draytekl_firmware Cross-Site Request Forgery (CSRF)

Published May 18, 2018 · catalog updated May 18, 2018 · i-lan draytekl_firmware Cross-Site Request

Patch now

CVE-2018-20872 is in the CISA known-exploited catalog. Confirm i-lan draytekl_firmware Cross-Site Request against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (i-lan draytekl_firmware Cross-Site Request).
  • No version range is stored. A customer cannot check an installed version against this record.
Severity
Unknown—
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
0.51%
Remediation
Remediation guidance
Affected products
vendor i-lan draytekl_firmware

DrayTek routers before 2018-05-23 allow CSRF attacks to change DNS or DHCP settings, a related issue to CVE-2017-11649.

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 i-lan draytekl_firmwareversion unspecified

How to fix CVE-2018-20872

What to do

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

Should you patch?

CVE-2018-20872 is in the CISA known-exploited catalog. Confirm i-lan draytekl_firmware Cross-Site Request against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

What should an analyst verify?

No weakness class is stored. EPSS 0.51%. The CISA KEV listing is the exploitation evidence. 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. May 18, 2018 · VulnCheck KEV

    Detected

    DrayTek routers before 2018-05-23 allow CSRF attacks to change DNS or DHCP settings, a related issue to CVE-2017-11649.

  2. May 18, 2018 · CISA KEV

    Known exploited

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

Sources

  • CVE.orgVulnerability recordCVE-2018-20872

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2018-20872

    30-day exploitation probability 0.5%

    first.org
  • VulnCheck KEVConfirmed exploitationCVE-2018-20872

    DrayTek routers before 2018-05-23 allow CSRF attacks to change DNS or DHCP settings, a related issue to CVE-2017-11649.

    vulncheck.com

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.