How severe is CVE-2021-32426?

CVE-2021-32426 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2021-32426 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-32426?

CVE-2021-32426 affects Trendnet Tw100-s4w1ca Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-32426?

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

When was CVE-2021-32426 published?

CVE-2021-32426 was published on 2021-06-17 and last updated on 2026-06-17.

CVE-2021-32426

CVE-2021-32426 is a medium-severity vulnerability in Trendnet Tw100-s4w1ca Firmware with a CVSS 3.x base score of 6.1. 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-79.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-79
Affected product: Trendnet Tw100-s4w1ca Firmware
Published: 2021-06-17
Last modified: 2026-06-17

Description

In TrendNet TW100-S4W1CA 2.3.32, it is possible to inject arbitrary JavaScript into the router's web interface via the "echo" command.

Frequently asked questions

What is CVE-2021-32426?: In TrendNet TW100-S4W1CA 2.3.32, it is possible to inject arbitrary JavaScript into the router's web interface via the "echo" command.
How severe is CVE-2021-32426?: CVE-2021-32426 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2021-32426 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-32426?: CVE-2021-32426 affects Trendnet Tw100-s4w1ca Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-32426?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-32426 published?: CVE-2021-32426 was published on 2021-06-17 and last updated on 2026-06-17.

References

https://github.com/Galapag0s/Trendnet_TW100-S4W1CA/blob/main/writeup_XSS.txt

Affected products (1)

cpe:2.3:o:trendnet:tw100-s4w1ca_firmware:2.3.32:*:*:*:*:*:*:*

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