How severe is CVE-2020-14077?

CVE-2020-14077 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-14077 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-14077?

CVE-2020-14077 affects Trendnet Tew-827dru Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-14077?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-14077 published?

CVE-2020-14077 was published on 2020-06-15 and last updated on 2026-06-17.

CVE-2020-14077

CVE-2020-14077 is a high-severity vulnerability in Trendnet Tew-827dru Firmware with a CVSS 3.x base score of 8.8. 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-787.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 2% (76th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Trendnet Tew-827dru Firmware
Published: 2020-06-15
Last modified: 2026-06-17

Description

TRENDnet TEW-827DRU devices through 2.06B04 contain a stack-based buffer overflow in the ssi binary. The overflow allows an authenticated user to execute arbitrary code by POSTing to apply.cgi via the action set_sta_enrollee_pin_wifi1 (or set_sta_enrollee_pin_wifi0) with a sufficiently long wps_sta_enrollee_pin key.

Frequently asked questions

What is CVE-2020-14077?: TRENDnet TEW-827DRU devices through 2.06B04 contain a stack-based buffer overflow in the ssi binary. The overflow allows an authenticated user to execute arbitrary code by POSTing to apply.cgi via the action set_sta_enrollee_pin_wifi1 (or set_sta_enrollee_pin_wifi0) with a sufficiently long wps_sta_enrollee_pin key.
How severe is CVE-2020-14077?: CVE-2020-14077 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-14077 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-14077?: CVE-2020-14077 affects Trendnet Tew-827dru Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-14077?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-14077 published?: CVE-2020-14077 was published on 2020-06-15 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:trendnet:tew-827dru_firmware:*:*:*:*:*:*:*:*

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