How severe is CVE-2026-4295?

CVE-2026-4295 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-4295 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2026-4295?

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-2026-4295 have an EU (EUVD) identifier?

Yes. CVE-2026-4295 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-12638.

When was CVE-2026-4295 published?

CVE-2026-4295 was published on 2026-03-17 and last updated on 2026-06-17.

CVE-2026-4295

CVE-2026-4295 is a high-severity vulnerability with a CVSS 3.x base score of 7.8. 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-829.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v4: 8.5
EPSS exploit prediction: 0% (11th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-12638
Weakness: CWE-829
Published: 2026-03-17
Last modified: 2026-06-17

Description

Improper trust boundary enforcement in Kiro IDE before version 0.8.0 on all supported platforms might allow a remote unauthenticated threat actor to execute arbitrary code via maliciously crafted project directory files that bypass workspace trust protections when a local user opens the directory. To remediate this issue, users should upgrade to version 0.8.0 or higher.

Frequently asked questions

What is CVE-2026-4295?: Improper trust boundary enforcement in Kiro IDE before version 0.8.0 on all supported platforms might allow a remote unauthenticated threat actor to execute arbitrary code via maliciously crafted project directory files that bypass workspace trust protections when a local user opens the directory. To remediate this issue, users should upgrade to version 0.8.0 or higher.
How severe is CVE-2026-4295?: CVE-2026-4295 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-4295 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (11th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2026-4295?: 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-2026-4295 have an EU (EUVD) identifier?: Yes. CVE-2026-4295 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-12638.
When was CVE-2026-4295 published?: CVE-2026-4295 was published on 2026-03-17 and last updated on 2026-06-17.

References

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