How severe is CVE-2025-30399?

CVE-2025-30399 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-30399 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-2025-30399?

CVE-2025-30399 primarily affects Microsoft Visual Studio 2022. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-30399?

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-2025-30399 have an EU (EUVD) identifier?

Yes. CVE-2025-30399 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-18115.

When was CVE-2025-30399 published?

CVE-2025-30399 was published on 2025-06-13 and last updated on 2026-06-17.

CVE-2025-30399

CVE-2025-30399 is a high-severity vulnerability in Microsoft Visual Studio 2022 with a CVSS 3.x base score of 7.5. 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-426.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-18115
Weakness: CWE-426
Affected product: Microsoft Visual Studio 2022
Published: 2025-06-13
Last modified: 2026-06-17

Description

Untrusted search path in .NET and Visual Studio allows an unauthorized attacker to execute code over a network.

Frequently asked questions

What is CVE-2025-30399?: Untrusted search path in .NET and Visual Studio allows an unauthorized attacker to execute code over a network.
How severe is CVE-2025-30399?: CVE-2025-30399 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-30399 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-2025-30399?: CVE-2025-30399 primarily affects Microsoft Visual Studio 2022. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-30399?: 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-2025-30399 have an EU (EUVD) identifier?: Yes. CVE-2025-30399 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-18115.
When was CVE-2025-30399 published?: CVE-2025-30399 was published on 2025-06-13 and last updated on 2026-06-17.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-30399

Affected products (3)

cpe:2.3:a:microsoft:visual_studio_2022:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:powershell:*:*:*:*:*:*:*:*

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