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Vulnerabilities

Vulnerability · CVE-2020-14080

trendnet tew-827dru_firmware Out-of-bounds Write

Published Mar 11, 2026 · catalog updated Mar 11, 2026 · trendnet tew-827dru_firmware Out-of-bounds Write

Patch now

CVE-2020-14080 is in the CISA known-exploited catalog. Confirm trendnet tew-827dru_firmware Out-of-bounds Write 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 (trendnet tew-827dru_firmware Out-of-bounds Write).
  • 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
2.35%
Remediation
Remediation guidance
Affected products
vendor trendnet tew-827dru_firmware

TRENDnet TEW-827DRU devices through 2.06B04 contain a stack-based buffer overflow in the ssi binary. The overflow allows an unauthenticated user to execute arbitrary code by POSTing to apply_sec.cgi via the action ping_test with a sufficiently long ping_ipaddr key.

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 trendnet tew-827dru_firmwareversion unspecified

How to fix CVE-2020-14080

What to do

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

Should you patch?

CVE-2020-14080 is in the CISA known-exploited catalog. Confirm trendnet tew-827dru_firmware Out-of-bounds Write 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 2.35%. 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. Mar 11, 2026 · VulnCheck KEV

    Detected

    TRENDnet TEW-827DRU devices through 2.06B04 contain a stack-based buffer overflow in the ssi binary. The overflow allows an unauthenticated user to execute arbitrary code by POSTing to apply_sec.cgi via the action ping_test with a sufficiently long ping_ipaddr key.

  2. Mar 11, 2026 · 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-2020-14080

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2020-14080

    30-day exploitation probability 2.3%

    first.org
  • VulnCheck KEVConfirmed exploitationCVE-2020-14080

    TRENDnet TEW-827DRU devices through 2.06B04 contain a stack-based buffer overflow in the ssi binary. The overflow allows an unauthenticated user to execute arbitrary code by POSTing to apply_sec.cgi via the action ping_test with a sufficiently long ping_ipaddr key.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.