How severe is CVE-2025-6886?

CVE-2025-6886 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-2025-6886 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-6886?

CVE-2025-6886 affects Tenda Ac5 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-6886?

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-2025-6886 have an EU (EUVD) identifier?

Yes. CVE-2025-6886 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-28774.

When was CVE-2025-6886 published?

CVE-2025-6886 was published on 2025-06-30 and last updated on 2026-06-17.

CVE-2025-6886

CVE-2025-6886 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-119.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
CVSS v4: 7.4
EPSS exploit prediction: 1% (51st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-28774
Weakness: CWE-119
Affected product: Tenda Ac5 Firmware
Published: 2025-06-30
Last modified: 2026-06-17

Description

A vulnerability has been found in Tenda AC5 15.03.06.47 and classified as critical. Affected by this vulnerability is an unknown functionality of the file /goform/openSchedWifi. The manipulation of the argument schedStartTime/schedEndTime leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.

Frequently asked questions

What is CVE-2025-6886?: A vulnerability has been found in Tenda AC5 15.03.06.47 and classified as critical. Affected by this vulnerability is an unknown functionality of the file /goform/openSchedWifi. The manipulation of the argument schedStartTime/schedEndTime leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.
How severe is CVE-2025-6886?: CVE-2025-6886 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-2025-6886 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (51st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-6886?: CVE-2025-6886 affects Tenda Ac5 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-6886?: 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-2025-6886 have an EU (EUVD) identifier?: Yes. CVE-2025-6886 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-28774.
When was CVE-2025-6886 published?: CVE-2025-6886 was published on 2025-06-30 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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