How severe is CVE-2025-13445?

CVE-2025-13445 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-2025-13445 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-13445?

CVE-2025-13445 affects Tenda Ac21 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-13445?

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-2025-13445 have an EU (EUVD) identifier?

Yes. CVE-2025-13445 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-198253.

When was CVE-2025-13445 published?

CVE-2025-13445 was published on 2025-11-20 and last updated on 2026-06-17.

CVE-2025-13445

CVE-2025-13445 is a high-severity vulnerability in Tenda Ac21 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: 3% (87th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-198253
Weakness: CWE-119
Affected product: Tenda Ac21 Firmware
Published: 2025-11-20
Last modified: 2026-06-17

Description

A flaw has been found in Tenda AC21 16.03.08.16. This affects an unknown part of the file /goform/SetIpMacBind. Executing a manipulation of the argument list can lead to stack-based buffer overflow. The attack can be executed remotely. The exploit has been published and may be used.

Frequently asked questions

What is CVE-2025-13445?: A flaw has been found in Tenda AC21 16.03.08.16. This affects an unknown part of the file /goform/SetIpMacBind. Executing a manipulation of the argument list can lead to stack-based buffer overflow. The attack can be executed remotely. The exploit has been published and may be used.
How severe is CVE-2025-13445?: CVE-2025-13445 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-2025-13445 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (87th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-13445?: CVE-2025-13445 affects Tenda Ac21 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-13445?: 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-2025-13445 have an EU (EUVD) identifier?: Yes. CVE-2025-13445 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-198253.
When was CVE-2025-13445 published?: CVE-2025-13445 was published on 2025-11-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:tenda:ac21_firmware:16.03.08.16:*:*:*:*:*:*:*

More vulnerabilities in Tenda Ac21 Firmware

CVE-2025-9605 — Critical (CVSS 9.8): A security vulnerability has been detected in Tenda AC21 and AC23 16.03.08.16. Affected is the function…
CVE-2026-4565 — High (CVSS 8.8): A vulnerability was detected in Tenda AC21 16.03.08.16. Impacted is the function formSetQosBand of the file…
CVE-2026-1637 — High (CVSS 8.8): A vulnerability was identified in Tenda AC21 16.03.08.16. The affected element is the function fromAdvSetMacMtuWan of…
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