CVE-2020-14079Public exploitNetwork attack vector

Authenticated code execution via update filename overflow

Published Jun 15, 2020 · Updated Aug 4, 2024

Stack-based buffer overflow in TRENDnet TEW-827DRU through 2.06B04 allows remote authenticated users to execute arbitrary code. The ssi binary handles update_file_name from apply.cgi auto_up_fw or auto_up_lp POST actions without enforcing a safe length, overflowing its stack buffer. Access to the authenticated web-management interface is required; successful exploitation runs attacker-controlled code on the router.

CVSS severity8.8
High
EPSS probability2.24%
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 TRENDnet TEW-827DRU through 2.06B04 allows remote authenticated users to execute arbitrary code. The ssi binary handles update_file_name from apply.cgi auto_up_fw or auto_up_lp POST actions without enforcing a safe length, overflowing its stack buffer. Access to the authenticated web-management interface is required; successful exploitation runs attacker-controlled code on the router.

The record

CVE
CVE-2020-14079
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 NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
6.5NIST NVDAV: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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