How severe is CVE-2026-4906?

CVE-2026-4906 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-2026-4906 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-4906?

CVE-2026-4906 affects Tenda Ac5 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-4906?

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-2026-4906 have an EU (EUVD) identifier?

Yes. CVE-2026-4906 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16524.

When was CVE-2026-4906 published?

CVE-2026-4906 was published on 2026-03-27 and last updated on 2026-06-17.

CVE-2026-4906

CVE-2026-4906 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: 3% (84th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-16524
Weakness: CWE-787
Affected product: Tenda Ac5 Firmware
Published: 2026-03-27
Last modified: 2026-06-17

Description

A vulnerability was determined in Tenda AC5 15.03.06.47. The affected element is the function decodePwd of the file /goform/WizardHandle of the component POST Request Handler. Executing a manipulation of the argument WANT/WANS can lead to stack-based buffer overflow. The attack can be executed remotely. The exploit has been publicly disclosed and may be utilized.

Frequently asked questions

What is CVE-2026-4906?: A vulnerability was determined in Tenda AC5 15.03.06.47. The affected element is the function decodePwd of the file /goform/WizardHandle of the component POST Request Handler. Executing a manipulation of the argument WANT/WANS can lead to stack-based buffer overflow. The attack can be executed remotely. The exploit has been publicly disclosed and may be utilized.
How severe is CVE-2026-4906?: CVE-2026-4906 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-2026-4906 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-4906?: CVE-2026-4906 affects Tenda Ac5 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-4906?: 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-2026-4906 have an EU (EUVD) identifier?: Yes. CVE-2026-4906 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-16524.
When was CVE-2026-4906 published?: CVE-2026-4906 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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