How severe is CVE-2025-9523?

CVE-2025-9523 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-9523 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-9523?

CVE-2025-9523 affects Tenda Ac1206 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-9523?

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

Does CVE-2025-9523 have an EU (EUVD) identifier?

Yes. CVE-2025-9523 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-25876.

When was CVE-2025-9523 published?

CVE-2025-9523 was published on 2025-08-27 and last updated on 2026-06-17.

CVE-2025-9523

CVE-2025-9523 is a critical-severity vulnerability in Tenda Ac1206 Firmware with a CVSS 3.x base score of 9.8. 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: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
CVSS v4: 8.9
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-25876
Weakness: CWE-119
Affected product: Tenda Ac1206 Firmware
Published: 2025-08-27
Last modified: 2026-06-17

Description

A vulnerability was detected in Tenda AC1206 15.03.06.23. Affected is the function GetParentControlInfo of the file /goform/GetParentControlInfo. The manipulation of the argument mac results in stack-based buffer overflow. It is possible to launch the attack remotely. The exploit is now public and may be used.

Frequently asked questions

What is CVE-2025-9523?: A vulnerability was detected in Tenda AC1206 15.03.06.23. Affected is the function GetParentControlInfo of the file /goform/GetParentControlInfo. The manipulation of the argument mac results in stack-based buffer overflow. It is possible to launch the attack remotely. The exploit is now public and may be used.
How severe is CVE-2025-9523?: CVE-2025-9523 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-9523 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-9523?: CVE-2025-9523 affects Tenda Ac1206 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-9523?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-9523 have an EU (EUVD) identifier?: Yes. CVE-2025-9523 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-25876.
When was CVE-2025-9523 published?: CVE-2025-9523 was published on 2025-08-27 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:tenda:ac1206_firmware:15.03.06.23:*:*:*:*:*:*:*

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