How severe is CVE-2025-9090?

CVE-2025-9090 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-2025-9090 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 14% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-9090?

CVE-2025-9090 affects Tenda Ac20 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-9090?

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

Does CVE-2025-9090 have an EU (EUVD) identifier?

Yes. CVE-2025-9090 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-25139.

When was CVE-2025-9090 published?

CVE-2025-9090 was published on 2025-08-17 and last updated on 2026-06-17.

CVE-2025-9090

CVE-2025-9090 is a medium-severity vulnerability in Tenda Ac20 Firmware with a CVSS 3.x base score of 6.3. Its EPSS exploit-prediction score of 14% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-74.

Key facts

Severity: Medium (CVSS 3.x base score 6.3)
CVSS v2: 6.5
CVSS v4: 2.1
EPSS exploit prediction: 14% (96th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-25139
Weakness: CWE-74
Affected product: Tenda Ac20 Firmware
Published: 2025-08-17
Last modified: 2026-06-17

Description

A vulnerability was identified in Tenda AC20 16.03.08.12. Affected is the function websFormDefine of the file /goform/telnet of the component Telnet Service. The manipulation leads to command injection. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.

Frequently asked questions

What is CVE-2025-9090?: A vulnerability was identified in Tenda AC20 16.03.08.12. Affected is the function websFormDefine of the file /goform/telnet of the component Telnet Service. The manipulation leads to command injection. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.
How severe is CVE-2025-9090?: CVE-2025-9090 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-2025-9090 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 14% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-9090?: CVE-2025-9090 affects Tenda Ac20 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-9090?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-9090 have an EU (EUVD) identifier?: Yes. CVE-2025-9090 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-25139.
When was CVE-2025-9090 published?: CVE-2025-9090 was published on 2025-08-17 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:tenda:ac20_firmware:16.03.08.12:*:*:*:*:*:*:*

More vulnerabilities in Tenda Ac20 Firmware

CVE-2025-15356 — High (CVSS 8.8): A vulnerability has been found in Tenda AC20 up to 16.03.08.12. The impacted element is the function sscanf of the file…
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