How severe is CVE-2023-40801?

CVE-2023-40801 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-2023-40801 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-40801?

CVE-2023-40801 affects Tenda Ac23. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-40801?

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.

When was CVE-2023-40801 published?

CVE-2023-40801 was published on 2023-08-25 and last updated on 2026-06-17.

CVE-2023-40801

CVE-2023-40801 is a high-severity vulnerability in Tenda Ac23 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-20.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Tenda Ac23
Published: 2023-08-25
Last modified: 2026-06-17

Description

The sub_451784 function does not validate the parameters entered by the user, resulting in a stack overflow vulnerability in Tenda AC23 v16.03.07.45_cn

Frequently asked questions

What is CVE-2023-40801?: The sub_451784 function does not validate the parameters entered by the user, resulting in a stack overflow vulnerability in Tenda AC23 v16.03.07.45_cn
How severe is CVE-2023-40801?: CVE-2023-40801 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-2023-40801 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-40801?: CVE-2023-40801 affects Tenda Ac23. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-40801?: 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.
When was CVE-2023-40801 published?: CVE-2023-40801 was published on 2023-08-25 and last updated on 2026-06-17.

References

https://github.com/lst-oss/Vulnerability/tree/main/Tenda/AC23/sub_451784

Affected products (1)

cpe:2.3:h:tenda:ac23:-:*:*:*:*:*:*:*

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