CVE-2023-24095Public exploitNetwork attack vector

Authenticated code execution via unbounded submit-url copy

Published Jan 23, 2023 · Updated Aug 2, 2024

Stack overflow in TRENDnet TEW-820AP firmware 1.01.B01 allows remote authenticated users to execute arbitrary code via an HTTP request. The boa HTTP handler for /boafrm/formSystemCheck passes an arbitrarily long submit-url value to sprintf, which copies it into stack memory without a length bound. Access to web management credentials is required; successful exploitation can take over the device or render it unusable.

CVSS severity8.8
High
EPSS probability1.04%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stack overflow in TRENDnet TEW-820AP firmware 1.01.B01 allows remote authenticated users to execute arbitrary code via an HTTP request. The boa HTTP handler for /boafrm/formSystemCheck passes an arbitrarily long submit-url value to sprintf, which copies it into stack memory without a length bound. Access to web management credentials is required; successful exploitation can take over the device or render it unusable.

The record

CVE
CVE-2023-24095
Published
Jan 23, 2023
Updated
Aug 2, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 23, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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

8.8NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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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