HOMEVULNERABILITIESCVE-2026-7609
HIGH

CVE-2026-7609

CWE-77Published: May 2, 2026· Updated: May 6, 2026

8.8
CVSS v3.1
EPSS:1.06%probability of exploitation in 30 daysPercentile:77.7th

Official Description

A flaw has been found in TRENDnet TEW-821DAP up to 1.12B01. The impacted element is the function tools_diagnostic of the file /tmp/diagnostic of the component Firmware Udpate. This manipulation causes os command injection. Remote exploitation of the attack is possible. The exploit has been published and may be used. The vendor explains: "That firmware version will only work on our hardware version v1.xR. We have already EOL that product 8 years ago and are no longer selling". This vulnerability only affects products that are no longer supported by the maintainer.

NVD Source

Technical Analysis

CVE-2026-7609 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

trendnet2 products
tew-821dap firmwaretew-821dap
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://github.com/IOTRes/IOT_Firmware_Update/blob/main/Trendnet/TEW-821DAP_CI2.md
ADVISORYhttps://vuldb.com/submit/806216
ADVISORYhttps://vuldb.com/vuln/360566

All References (4)

→
https://github.com/IOTRes/IOT_Firmware_Update/blob/main/Trendnet/TEW-821DAP_CI2.mdExploit · Third Party Advisory
→
https://vuldb.com/submit/806216Third Party Advisory · VDB Entry
→
https://vuldb.com/vuln/360566Third Party Advisory · VDB Entry
→
https://vuldb.com/vuln/360566/ctiPermissions Required · VDB Entry

Quick Facts

CVE IDCVE-2026-7609
CVSS Score8.8 / 10
SeverityHIGH
WeaknessCWE-77
CISA KEVNo
EPSS (30d)1.06%
Affected1 vendor
PublishedMay 2, 2026

Related CVEs (CWE-77)

CVE-2025-15379
10.0
CVE-2026-45663
9.9
CVE-2026-52806
KEV9.9
CVE-2026-20186
9.9
CVE-2026-20147
9.9
CVE-2026-26068
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-7609 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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