How severe is CVE-2025-10803?

CVE-2025-10803 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-2025-10803 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-2025-10803?

CVE-2025-10803 affects Tenda Ac23 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-10803?

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-2025-10803 have an EU (EUVD) identifier?

Yes. CVE-2025-10803 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-30760.

When was CVE-2025-10803 published?

CVE-2025-10803 was published on 2025-09-22 and last updated on 2026-06-17.

CVE-2025-10803

CVE-2025-10803 is a high-severity vulnerability in Tenda Ac23 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% (50th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-30760
Weakness: CWE-119
Affected product: Tenda Ac23 Firmware
Published: 2025-09-22
Last modified: 2026-06-17

Description

A vulnerability has been found in Tenda AC23 up to 16.03.07.52. Affected by this vulnerability is the function sscanf of the file /goform/SetPptpServerCfg of the component HTTP POST Request Handler. Such manipulation of the argument startIp leads to buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.

Frequently asked questions

What is CVE-2025-10803?: A vulnerability has been found in Tenda AC23 up to 16.03.07.52. Affected by this vulnerability is the function sscanf of the file /goform/SetPptpServerCfg of the component HTTP POST Request Handler. Such manipulation of the argument startIp leads to buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.
How severe is CVE-2025-10803?: CVE-2025-10803 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-2025-10803 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-2025-10803?: CVE-2025-10803 affects Tenda Ac23 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-10803?: 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-2025-10803 have an EU (EUVD) identifier?: Yes. CVE-2025-10803 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-30760.
When was CVE-2025-10803 published?: CVE-2025-10803 was published on 2025-09-22 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:tenda:ac23_firmware:*:*:*:*:*:*:*:*

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