How severe is CVE-2025-15459?

CVE-2025-15459 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-2025-15459 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-15459?

CVE-2025-15459 affects Utt 520w Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-15459?

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-2025-15459 have an EU (EUVD) identifier?

Yes. CVE-2025-15459 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-0909.

When was CVE-2025-15459 published?

CVE-2025-15459 was published on 2026-01-05 and last updated on 2026-06-17.

CVE-2025-15459

CVE-2025-15459 is a high-severity vulnerability in Utt 520w 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% (52nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-0909
Weakness: CWE-119
Affected product: Utt 520w Firmware
Published: 2026-01-05
Last modified: 2026-06-17

Description

A security vulnerability has been detected in UTT 进取 520W 1.7.7-180627. Affected by this issue is the function strcpy of the file /goform/formUser. Such manipulation of the argument passwd1 leads to buffer overflow. The attack may be launched remotely. The exploit has been disclosed publicly 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-2025-15459?: A security vulnerability has been detected in UTT 进取 520W 1.7.7-180627. Affected by this issue is the function strcpy of the file /goform/formUser. Such manipulation of the argument passwd1 leads to buffer overflow. The attack may be launched remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
How severe is CVE-2025-15459?: CVE-2025-15459 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-2025-15459 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-15459?: CVE-2025-15459 affects Utt 520w Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-15459?: 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-2025-15459 have an EU (EUVD) identifier?: Yes. CVE-2025-15459 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-0909.
When was CVE-2025-15459 published?: CVE-2025-15459 was published on 2026-01-05 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:utt:520w_firmware:*:*:*:*:*:*:*:*

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