How severe is CVE-2026-7609?

CVE-2026-7609 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.

Is CVE-2026-7609 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-7609?

CVE-2026-7609 affects Trendnet Tew-821dap Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-7609?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-7609 have an EU (EUVD) identifier?

Yes. CVE-2026-7609 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26773.

When was CVE-2026-7609 published?

CVE-2026-7609 was published on 2026-05-02 and last updated on 2026-06-17.

CVE-2026-7609

CVE-2026-7609 is a medium-severity vulnerability in Trendnet Tew-821dap Firmware with a CVSS 3.x base score of 6.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-77.

Key facts

Severity: Medium (CVSS 3.x base score 6.3)
CVSS v2: 6.5
CVSS v4: 2.1
EPSS exploit prediction: 4% (90th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-26773
Weakness: CWE-77
Affected product: Trendnet Tew-821dap Firmware
Published: 2026-05-02
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-7609?: 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.
How severe is CVE-2026-7609?: CVE-2026-7609 has a CVSS 3.x base score of 6.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability low.
Is CVE-2026-7609 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-7609?: CVE-2026-7609 affects Trendnet Tew-821dap Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-7609?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-7609 have an EU (EUVD) identifier?: Yes. CVE-2026-7609 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-26773.
When was CVE-2026-7609 published?: CVE-2026-7609 was published on 2026-05-02 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:trendnet:tew-821dap_firmware:1.12b01:*:*:*:*:*:*:*

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