How severe is CVE-2025-15431?

CVE-2025-15431 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-2025-15431 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-15431?

CVE-2025-15431 affects Utt 512w Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-15431?

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-2025-15431 have an EU (EUVD) identifier?

Yes. CVE-2025-15431 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-0709.

When was CVE-2025-15431 published?

CVE-2025-15431 was published on 2026-01-02 and last updated on 2026-06-17.

CVE-2025-15431

CVE-2025-15431 is a high-severity vulnerability in Utt 512w 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% (48th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-0709
Weakness: CWE-119
Affected product: Utt 512w Firmware
Published: 2026-01-02
Last modified: 2026-06-17

Description

A flaw has been found in UTT 进取 512W 1.7.7-171114. This affects the function strcpy of the file /goform/formFtpServerDirConfig. Executing a manipulation of the argument filename can lead to buffer overflow. The attack can be launched remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Frequently asked questions

What is CVE-2025-15431?: A flaw has been found in UTT 进取 512W 1.7.7-171114. This affects the function strcpy of the file /goform/formFtpServerDirConfig. Executing a manipulation of the argument filename can lead to buffer overflow. The attack can be launched remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
How severe is CVE-2025-15431?: CVE-2025-15431 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-2025-15431 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (48th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-15431?: CVE-2025-15431 affects Utt 512w Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-15431?: 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-2025-15431 have an EU (EUVD) identifier?: Yes. CVE-2025-15431 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-0709.
When was CVE-2025-15431 published?: CVE-2025-15431 was published on 2026-01-02 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:utt:512w_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Utt 512w Firmware

CVE-2025-14535 — Critical (CVSS 9.8): A vulnerability was identified in UTT 进取 512W up to 3.1.7.7-171114. Affected is the function strcpy of the file…
CVE-2025-14534 — Critical (CVSS 9.8): A vulnerability was determined in UTT 进取 512W up to 3.1.7.7-171114. This impacts the function strcpy of the file…
CVE-2025-15430 — High (CVSS 8.8): A vulnerability was detected in UTT 进取 512W 1.7.7-171114. Affected by this issue is the function strcpy of the file…
CVE-2025-15429 — High (CVSS 8.8): A security vulnerability has been detected in UTT 进取 512W 1.7.7-171114. Affected by this vulnerability is the…
CVE-2025-15428 — High (CVSS 8.8): A weakness has been identified in UTT 进取 512W 1.7.7-171114. Affected is the function strcpy of the file…
CVE-2025-15092 — High (CVSS 8.8): A vulnerability was identified in UTT 进取 512W up to 1.7.7-171114. Impacted is the function strcpy of the file…

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