How severe is CVE-2025-1566?

CVE-2025-1566 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-1566 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-1566?

CVE-2025-1566 affects Google Chrome Os. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-1566?

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-2025-1566 have an EU (EUVD) identifier?

Yes. CVE-2025-1566 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-11529.

When was CVE-2025-1566 published?

CVE-2025-1566 was published on 2025-04-16 and last updated on 2026-06-17.

CVE-2025-1566

CVE-2025-1566 is a high-severity vulnerability in Google Chrome Os 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-1319.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (10th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-11529
Weakness: CWE-1319
Affected product: Google Chrome Os
Published: 2025-04-16
Last modified: 2026-06-17

Description

DNS Leak in Native System VPN in Google ChromeOS Dev Channel on ChromeOS 16002.23.0 allows network observers to expose plaintext DNS queries via failure to properly tunnel DNS traffic during VPN state transitions.

Frequently asked questions

What is CVE-2025-1566?: DNS Leak in Native System VPN in Google ChromeOS Dev Channel on ChromeOS 16002.23.0 allows network observers to expose plaintext DNS queries via failure to properly tunnel DNS traffic during VPN state transitions.
How severe is CVE-2025-1566?: CVE-2025-1566 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-1566 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-1566?: CVE-2025-1566 affects Google Chrome Os. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-1566?: 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-2025-1566 have an EU (EUVD) identifier?: Yes. CVE-2025-1566 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-11529.
When was CVE-2025-1566 published?: CVE-2025-1566 was published on 2025-04-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:google:chrome_os:16002.23.0:*:*:*:*:*:*:*

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