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Vulnerabilities

Vulnerability · CVE-2020-10827

DrayTek vigor300b_firmware Out-of-bounds Write

Published Jan 12, 2022 · catalog updated Jan 12, 2022 · DrayTek

Patch now

CVE-2020-10827 is in the CISA known-exploited catalog. Confirm DrayTek against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • 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
20.88%
Remediation
Remediation guidance
Affected products
vendor DrayTek vigor300b_firmware

A stack-based buffer overflow in apmd on Draytek Vigor3900, Vigor2960, and Vigor300B devices before 1.5.1 allows remote attackers to achieve code execution via a remote HTTP request.

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 DrayTek vigor300b_firmwareversion unspecified

How to fix CVE-2020-10827

What to do

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

Should you patch?

CVE-2020-10827 is in the CISA known-exploited catalog. Confirm DrayTek 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 20.88%. 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. Jan 12, 2022 · VulnCheck KEV

    Detected

    A stack-based buffer overflow in apmd on Draytek Vigor3900, Vigor2960, and Vigor300B devices before 1.5.1 allows remote attackers to achieve code execution via a remote HTTP request.

  2. Jan 12, 2022 · 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-2020-10827

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2020-10827

    30-day exploitation probability 20.9%

    first.org
  • VulnCheck KEVConfirmed exploitationCVE-2020-10827

    A stack-based buffer overflow in apmd on Draytek Vigor3900, Vigor2960, and Vigor300B devices before 1.5.1 allows remote attackers to achieve code execution via a remote HTTP request.

    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.