How severe is CVE-2025-14139?

CVE-2025-14139 has a CVSS 3.x base score of 5.7, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-14139 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-14139?

CVE-2025-14139 affects Utt 520w Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-14139?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2025-14139 have an EU (EUVD) identifier?

Yes. CVE-2025-14139 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-201550.

When was CVE-2025-14139 published?

CVE-2025-14139 was published on 2025-12-06 and last updated on 2026-06-17.

CVE-2025-14139

CVE-2025-14139 is a medium-severity vulnerability in Utt 520w Firmware with a CVSS 3.x base score of 5.7. 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-120.

Key facts

Severity: Medium (CVSS 3.x base score 5.7)
CVSS v2: 5.5
CVSS v4: 5.5
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-201550
Weakness: CWE-120
Affected product: Utt 520w Firmware
Published: 2025-12-06
Last modified: 2026-06-17

Description

A security vulnerability has been detected in UTT 进取 520W 1.7.7-180627. Impacted is the function strcpy of the file /goform/formConfigDnsFilterGlobal. Such manipulation of the argument timeRangeName leads to buffer overflow. 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-2025-14139?: A security vulnerability has been detected in UTT 进取 520W 1.7.7-180627. Impacted is the function strcpy of the file /goform/formConfigDnsFilterGlobal. Such manipulation of the argument timeRangeName leads to buffer overflow. 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-2025-14139?: CVE-2025-14139 has a CVSS 3.x base score of 5.7, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-14139 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-14139?: CVE-2025-14139 affects Utt 520w Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-14139?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2025-14139 have an EU (EUVD) identifier?: Yes. CVE-2025-14139 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-201550.
When was CVE-2025-14139 published?: CVE-2025-14139 was published on 2025-12-06 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:utt:520w_firmware:1.7.7-180627:*:*:*:*:*:*:*

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