CVE-2026-7610Public exploitNetwork attack vector

Firmware replacement via cleartext update download

Published May 2, 2026 · Updated May 2, 2026

Cleartext firmware retrieval in TRENDnet TEW-821DAP 1.12B01 allows man-in-the-middle attackers to replace update downloads. The /www/cgi/ssi update handler uses a hard-coded firmware URL over HTTP rather than HTTPS, exposing the URL and response to modification. The attack requires interception of update traffic; URL replacement can redirect the device or deliver modified firmware.

CVSS severity3.7
Low
EPSS probability0.32%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext firmware retrieval in TRENDnet TEW-821DAP 1.12B01 allows man-in-the-middle attackers to replace update downloads. The /www/cgi/ssi update handler uses a hard-coded firmware URL over HTTP rather than HTTPS, exposing the URL and response to modification. The attack requires interception of update traffic; URL replacement can redirect the device or deliver modified firmware.

The record

CVE
CVE-2026-7610
Published
May 2, 2026
Updated
May 2, 2026
Vendor
TRENDnet
Product
TEW-821DAP
Classifications
CWE-319, CWE-310, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 2, 2026CVE publishedPublication date reported by the CVE source.
  2. May 2, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.12B01

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

TRENDnet · TEW-821DAPversion=1.12B01

Published CVSS scores

2.9VulDBCVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
2.6VulDBAV:N/AC:H/Au:N/C:P/I:N/A:N
8.1NIST NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
3.7VulDBCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-319Cleartext Transmission of Sensitive Information
CWE-310Cryptographic Issues
T1557Adversary-in-the-Middle

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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