CVE-2020-14074Public exploitNetwork attack vector

Authenticated code execution via overlong MAC list

Published Jun 15, 2020 · Updated Aug 4, 2024

Stack-based buffer overflow in the ssi binary in TRENDnet TEW-827DRU 2.06B04 and earlier allows remote authenticated users to execute code. The kick_ban_wifi_mac_allow handler reached through apply.cgi processes an oversized qcawifi.wifi0_vap0.maclist value in a fixed-size stack buffer. Access to the authenticated management interface is required, and successful exploitation compromises the router process.

CVSS severity8.8
High
EPSS probability1.78%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack-based buffer overflow in the ssi binary in TRENDnet TEW-827DRU 2.06B04 and earlier allows remote authenticated users to execute code. The kick_ban_wifi_mac_allow handler reached through apply.cgi processes an oversized qcawifi.wifi0_vap0.maclist value in a fixed-size stack buffer. Access to the authenticated management interface is required, and successful exploitation compromises the router process.

The record

CVE
CVE-2020-14074
Published
Jun 15, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 15, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.8NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.5NIST National Vulnerability DatabaseAV:N/AC:L/Au:S/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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