CVE-2025-6558

HIGH
8.8
CVSS Score
Published: July 15, 2025 at 06:12 PM UTC
Updated: October 1, 2026 at 12:00 PM UTC
10 products affected across 5 vendorsmacOSDebian LinuxChrome

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Severity
HIGH8.8
Exploitation
CISA KEV
Exploit prediction
EPSS 11%
SSVC
Active

Actively Exploited

CISA Known Exploited Vulnerabilities (KEV) Catalog

EPSS Score10.9%

EPSS (Exploit Prediction Scoring System) estimates a 10.9% chance this CVE is exploited in the wild within the next 30 days — higher than 96% of all CVEs. It complements CVSS: a high EPSS on a mid-severity CVE can still be urgent.

Google Chromium contains an improper input validation vulnerability in ANGLE and GPU. This vulnerability could allow a remote attacker to potentially perform a sandbox escape via a crafted HTML page. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.

Required Action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Ransomware Use
Unknown
Added to KEV
Jul 22, 2025
Remediation Due
Aug 12, 2025
440 days overdue

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)

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 18.6
Affected range stops below 18.6, so it looks safe — our inference, not a vendor statement
v < 18.6
Affected range stops below 18.6, so it looks safe — our inference, not a vendor statement
v < 15.6
Affected range stops below 15.6, so it looks safe — our inference, not a vendor statement
v < 18.6
Affected range stops below 18.6, so it looks safe — our inference, not a vendor statement
v < 2.6
Affected range stops below 2.6, so it looks safe — our inference, not a vendor statement
v < 11.6
Affected range stops below 11.6, so it looks safe — our inference, not a vendor statement
v < 138.0.7204.157
Affected range stops below 138.0.7204.157, so it looks safe — our inference, not a vendor statement
v < 2.48.5
Affected range stops below 2.48.5, so it looks safe — our inference, not a vendor statement
v < 2.48.5
Affected range stops below 2.48.5, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (11)

Issue TrackingPermissions Required
https://issues.chromium.org/issues/427162086
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
http://seclists.org/fulldisclosure/2025/Aug/0
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
http://seclists.org/fulldisclosure/2025/Jul/30
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
http://seclists.org/fulldisclosure/2025/Jul/32
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
http://seclists.org/fulldisclosure/2025/Jul/35
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
http://seclists.org/fulldisclosure/2025/Jul/37
Mailing List
Source: af854a3a-2127-422b-91ae-364da2661108
http://www.openwall.com/lists/oss-security/2025/08/02/1

SSVC — Action Prioritization

SSVCActiveNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-20

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