How severe is CVE-2026-4905?

CVE-2026-4905 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-2026-4905 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-4905?

CVE-2026-4905 affects Tenda Ac5 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-4905?

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.

Does CVE-2026-4905 have an EU (EUVD) identifier?

Yes. CVE-2026-4905 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16476.

When was CVE-2026-4905 published?

CVE-2026-4905 was published on 2026-03-27 and last updated on 2026-06-17.

CVE-2026-4905

CVE-2026-4905 is a high-severity vulnerability in Tenda Ac5 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: 9.0
CVSS v4: 7.4
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-16476
Weakness: CWE-787
Affected product: Tenda Ac5 Firmware
Published: 2026-03-27
Last modified: 2026-06-17

Description

A vulnerability was found in Tenda AC5 15.03.06.47. Impacted is the function formWifiWpsOOB of the file /goform/WifiWpsOOB of the component POST Request Handler. Performing a manipulation of the argument index results in stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been made public and could be used.

Frequently asked questions

What is CVE-2026-4905?: A vulnerability was found in Tenda AC5 15.03.06.47. Impacted is the function formWifiWpsOOB of the file /goform/WifiWpsOOB of the component POST Request Handler. Performing a manipulation of the argument index results in stack-based buffer overflow. Remote exploitation of the attack is possible. The exploit has been made public and could be used.
How severe is CVE-2026-4905?: CVE-2026-4905 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-2026-4905 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-4905?: CVE-2026-4905 affects Tenda Ac5 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-4905?: 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.
Does CVE-2026-4905 have an EU (EUVD) identifier?: Yes. CVE-2026-4905 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16476.
When was CVE-2026-4905 published?: CVE-2026-4905 was published on 2026-03-27 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:tenda:ac5_firmware:15.03.06.47:*:*:*:*:*:*:*

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