How severe is CVE-2025-3259?

CVE-2025-3259 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-2025-3259 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-2025-3259?

CVE-2025-3259 affects Tenda Rx3 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-3259?

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-2025-3259 have an EU (EUVD) identifier?

Yes. CVE-2025-3259 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-9765.

When was CVE-2025-3259 published?

CVE-2025-3259 was published on 2025-04-04 and last updated on 2026-06-17.

CVE-2025-3259

CVE-2025-3259 is a high-severity vulnerability in Tenda Rx3 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-787.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
CVSS v4: 8.7
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-9765
Weakness: CWE-787
Affected product: Tenda Rx3 Firmware
Published: 2025-04-04
Last modified: 2026-06-17

Description

A vulnerability, which was classified as critical, has been found in Tenda RX3 16.03.13.11. This issue affects the function formSetDeviceName of the file /goform/SetOnlineDevName. The manipulation of the argument devName leads to stack-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.

Frequently asked questions

What is CVE-2025-3259?: A vulnerability, which was classified as critical, has been found in Tenda RX3 16.03.13.11. This issue affects the function formSetDeviceName of the file /goform/SetOnlineDevName. The manipulation of the argument devName leads to stack-based buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used.
How severe is CVE-2025-3259?: CVE-2025-3259 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-2025-3259 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-2025-3259?: CVE-2025-3259 affects Tenda Rx3 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-3259?: 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-2025-3259 have an EU (EUVD) identifier?: Yes. CVE-2025-3259 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-9765.
When was CVE-2025-3259 published?: CVE-2025-3259 was published on 2025-04-04 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:tenda:rx3_firmware:16.03.13.11_multi:*:*:*:*:*:*:*

More vulnerabilities in Tenda Rx3 Firmware

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CVE-2026-2181 — High (CVSS 8.8): A security flaw has been discovered in Tenda RX3 16.03.13.11. Affected by this vulnerability is an unknown…
CVE-2026-2180 — High (CVSS 8.8): A vulnerability was identified in Tenda RX3 16.03.13.11. Affected is an unknown function of the file…

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