How severe is CVE-2026-6186?

CVE-2026-6186 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-2026-6186 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-6186?

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-2026-6186 have an EU (EUVD) identifier?

Yes. CVE-2026-6186 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-21984.

When was CVE-2026-6186 published?

CVE-2026-6186 was published on 2026-04-13 and last updated on 2026-06-17.

CVE-2026-6186

CVE-2026-6186 is a high-severity vulnerability 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% (45th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-21984
Weakness: CWE-119
Published: 2026-04-13
Last modified: 2026-06-17

Description

A security vulnerability has been detected in UTT HiPER 1200GW up to 2.5.3-170306. This vulnerability affects the function strcpy of the file /goform/formNatStaticMap. The manipulation of the argument NatBind leads to buffer overflow. The attack is possible to be carried out remotely. The exploit has been disclosed publicly and may be used.

Frequently asked questions

What is CVE-2026-6186?: A security vulnerability has been detected in UTT HiPER 1200GW up to 2.5.3-170306. This vulnerability affects the function strcpy of the file /goform/formNatStaticMap. The manipulation of the argument NatBind leads to buffer overflow. The attack is possible to be carried out remotely. The exploit has been disclosed publicly and may be used.
How severe is CVE-2026-6186?: CVE-2026-6186 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-2026-6186 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-6186?: 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-2026-6186 have an EU (EUVD) identifier?: Yes. CVE-2026-6186 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-21984.
When was CVE-2026-6186 published?: CVE-2026-6186 was published on 2026-04-13 and last updated on 2026-06-17.

References

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