How severe is CVE-2025-6558?

CVE-2025-6558 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-6558 being actively exploited?

Yes. CVE-2025-6558 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2025-07-22, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2025-6558?

CVE-2025-6558 primarily affects Google Chrome. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-6558?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2025-6558 have an EU (EUVD) identifier?

Yes. CVE-2025-6558 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-21546. It is also flagged as exploited in the EUVD (since 2025-07-22).

When was CVE-2025-6558 published?

CVE-2025-6558 was published on 2025-07-15 and last updated on 2026-06-17.

CVE-2025-6558

CVE-2025-6558 is a high-severity vulnerability in Google Chrome with a CVSS 3.x base score of 8.8. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2025-07-22). The underlying weakness is classified as CWE-20.

Key facts

Severity: High (CVSS 3.x base score 8.8)
EPSS exploit prediction: 9% (95th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2025-07-22)
EU (EUVD) id: EUVD-2025-21546
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2025-07-22)
Weakness: CWE-20
Affected product: Google Chrome
Published: 2025-07-15
Last modified: 2026-06-17

Description

Insufficient validation of untrusted input in ANGLE and GPU in Google Chrome prior to 138.0.7204.157 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)

Frequently asked questions

What is CVE-2025-6558?: Insufficient validation of untrusted input in ANGLE and GPU in Google Chrome prior to 138.0.7204.157 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)
How severe is CVE-2025-6558?: CVE-2025-6558 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-6558 being actively exploited?: Yes. CVE-2025-6558 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2025-07-22, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2025-6558?: CVE-2025-6558 primarily affects Google Chrome. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-6558?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2025-6558 have an EU (EUVD) identifier?: Yes. CVE-2025-6558 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-21546. It is also flagged as exploited in the EUVD (since 2025-07-22).
When was CVE-2025-6558 published?: CVE-2025-6558 was published on 2025-07-15 and last updated on 2026-06-17.

References

Affected products (10)

cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*
cpe:2.3:a:wpewebkit:wpe_webkit:*:*:*:*:*:*:*:*
cpe:2.3:a:webkitgtk:webkitgtk:*:*:*:*:*:*:*:*

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