How severe is CVE-2026-1140?

CVE-2026-1140 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-2026-1140 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-1140?

CVE-2026-1140 affects Utt 520w Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-1140?

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-2026-1140 have an EU (EUVD) identifier?

Yes. CVE-2026-1140 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3240.

When was CVE-2026-1140 published?

CVE-2026-1140 was published on 2026-01-19 and last updated on 2026-06-17.

CVE-2026-1140

CVE-2026-1140 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% (47th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-3240
Weakness: CWE-119
Affected product: Utt 520w Firmware
Published: 2026-01-19
Last modified: 2026-06-17

Description

A vulnerability was found in UTT 进取 520W 1.7.7-180627. This issue affects the function strcpy of the file /goform/ConfigExceptAli. The manipulation results in buffer overflow. It is possible to launch the attack remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.

Frequently asked questions

What is CVE-2026-1140?: A vulnerability was found in UTT 进取 520W 1.7.7-180627. This issue affects the function strcpy of the file /goform/ConfigExceptAli. The manipulation results in buffer overflow. It is possible to launch the attack remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
How severe is CVE-2026-1140?: CVE-2026-1140 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-2026-1140 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-1140?: CVE-2026-1140 affects Utt 520w Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-1140?: 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-2026-1140 have an EU (EUVD) identifier?: Yes. CVE-2026-1140 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-3240.
When was CVE-2026-1140 published?: CVE-2026-1140 was published on 2026-01-19 and last updated on 2026-06-17.

References

Affected products (1)

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

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