CVE-2025-6558 is a high-severity vulnerability affecting various products, including Google Chrome and Apple Safari. This vulnerability allows insufficient validation of untrusted input in ANGLE and GPU components. A remote attacker may leverage this weakness to perform a sandbox escape via a crafted HTML page, posing significant risks to users.
The CVSS score of 8.8 indicates that this vulnerability is critical, necessitating immediate action from organizations to mitigate potential risks. The urgency for defenders is underscored by the known exploit status of this vulnerability; attackers may actively seek to exploit it, leading to unauthorized access or system compromise.
Organizations utilizing affected products should prioritize patching this vulnerability. The risk to organizations includes possible unauthorized actions within their environments, making it imperative to address this issue in the next patch cycle.
The vulnerability was published on July 15, 2025, and is currently under active analysis. With a significant number of products affected, including various versions of macOS and iOS, timely remediation is essential to ensure organizational security.
Organizations should prioritize patching immediately.
Vulnerability Details
The official CVE description states: '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.' This vulnerability is classified under CWE-20, indicating improper input validation.
The CVSS score of 8.8 reflects high severity, with the vulnerability characterized by a network attack vector, low attack complexity, no privileges required, and user interaction needed for exploitation. The potential impact includes high confidentiality, integrity, and availability risks.
Affected products include various versions of Chrome, Safari, macOS, iOS, and other Apple operating systems. The vulnerability was disclosed on July 15, 2025, and is actively being monitored by security teams.
Technical Analysis
The root cause of CVE-2025-6558 stems from insufficient validation of untrusted input. This vulnerability allows attackers to manipulate the input, leading to potential sandbox escape scenarios.
The attack vector is categorized as network-based, meaning that an attacker could exploit this vulnerability remotely. The attack complexity is low, as it doesn't require advanced skills or resources. Importantly, the attacker does not need any privileges to exploit this vulnerability, but user interaction is required, such as visiting a maliciously crafted webpage.
The potential impacts are severe, affecting confidentiality, integrity, and availability, making it a high-priority security concern.
Risk & Impact Analysis
The real-world deployment risk of CVE-2025-6558 is significant. With the potential for sandbox escapes, attackers may gain unauthorized access to user data or system functionalities. The blast radius is extensive, given the variety of affected products across multiple platforms, including Chrome on Windows, macOS, and Linux, as well as Safari on iOS and macOS.
With the CVSS score indicating high severity and the existence of known exploits, organizations must act swiftly. The urgency for remediation is critical, especially considering the vulnerability's presence in widely used applications.
Organizations should address this vulnerability in their priority patch cycle, ensuring that all affected systems are updated to mitigate any potential risks.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | Yes |
Ransomware Use | No |
Affected Versions
The following versions are affected by CVE-2025-6558:
1. Google Chrome versions prior to 138.0.7204.157. 2. Apple Safari versions prior to 18.6. 3. Apple macOS versions prior to 15.6. 4. Apple iOS versions prior to 18.6. 5. Debian Linux 11.0.
Mitigation & Remediation
To remediate CVE-2025-6558, organizations should apply the latest patches provided by the respective vendors. Ensure that all users are updated to the most recent version of Chrome and Safari, and follow specific deployment instructions from Apple and Google.
If patches are not immediately available, organizations should consider implementing temporary workarounds such as restricting access to vulnerable components or enhancing monitoring for unusual behaviors associated with this vulnerability.
For comprehensive coverage, organizations should also implement network controls and configuration hardening to further mitigate risks associated with potential exploitation.
Continuous penetration testing can also help identify additional vulnerabilities and ensure a secure environment.
Detection Guidance
Organizations should monitor logs for indicators of exploitation attempts related to CVE-2025-6558. Look for unusual requests targeting the ANGLE and GPU components in Chrome and Safari.
Behavioral anomalies and sudden spikes in network traffic could also indicate attempts to exploit this vulnerability. Network signatures should be updated to alert on potential attack patterns associated with crafted HTML pages.
AppSecure Threat Intelligence Insight
CVE-2025-6558 highlights a significant trend in web browser vulnerabilities, particularly concerning input validation flaws. As organizations increasingly rely on web applications, understanding the implications of such vulnerabilities is crucial.
The long-term significance of this vulnerability lies in its potential to affect multiple platforms simultaneously, given the widespread use of Chromium-based browsers. Security teams should take this opportunity to review their input validation practices and ensure they align with industry best practices.
Furthermore, organizations should consider implementing comprehensive security training programs to raise awareness about the risks associated with untrusted input and how to effectively mitigate them.
Building a robust vulnerability management program will help organizations proactively address similar issues in the future.
Penetration testing methodologies should also be revisited to ensure all potential vectors are being tested effectively.
Cloud penetration testing can also provide insights into how such vulnerabilities can be exploited in cloud environments.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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