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CVE-2025-4096: High Vulnerability in Google Chrome

A high-severity heap buffer overflow vulnerability in Google Chrome could allow remote attackers to exploit heap corruption through a crafted HTML page. Organizations should prioritize patching to mitigate risks associated with this vulnerability.

HIGHCVSS 8.8 · Published May 5, 2025

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CVE-2025-4096 is a high-severity vulnerability affecting Google Chrome, specifically identified as a heap buffer overflow in HTML prior to version 136.0.7103.59. This vulnerability allows a remote attacker to potentially exploit heap corruption by crafting a malicious HTML page. The CVSS score of 8.8 indicates that this vulnerability poses a serious risk to organizations using affected versions of Chrome.

Risk to organizations includes potential data breaches and unauthorized access to sensitive information, as the heap corruption could lead to arbitrary code execution. Given the widespread use of Google Chrome, the impact of this vulnerability can be significant, highlighting the urgency for organizations to address it promptly.

There are currently no known exploits for this vulnerability, but its high exploitability score suggests that it could be targeted by attackers in the wild. Organizations should monitor their systems for any sign of exploitation and prioritize patching their installations of Chrome to the latest version.

Organizations should prioritize patching immediately. The potential for exploitation through crafted HTML pages necessitates swift action to mitigate risks associated with this vulnerability.

Vulnerability Details

The vulnerability is characterized as a heap buffer overflow in Google Chrome, allowing for remote exploitation through crafted HTML. The official CVE description highlights the severity and potential impact of this flaw.

The CVSS score of 8.8 classifies this vulnerability as high severity, indicating that it poses a significant risk to organizations if left unpatched. The affected product is Google Chrome, specifically versions prior to 136.0.7103.59. This vulnerability has been classified under CWE-122, which denotes a heap-based buffer overflow.

Technical Analysis

The root cause of CVE-2025-4096 lies in the improper handling of memory allocation within the HTML parser of Google Chrome. This flaw allows an attacker to manipulate memory, leading to heap corruption. The attack vector is classified as NETWORK, meaning that no local access is required for exploitation.

The attack complexity is low, with no privileges required for exploitation and user interaction necessary due to the need for the user to visit a malicious webpage. The potential impacts of this vulnerability are severe, as it can lead to high confidentiality, integrity, and availability impacts.

Risk & Impact Analysis

Organizations deploying Google Chrome should assess the potential blast radius of this vulnerability. Given that it allows for remote exploitation, the risk is compounded by the high number of users who may be affected. Organizations are urged to evaluate their exposure and the urgency of applying patches based on the CVSS score.

The high exploitability of this vulnerability necessitates immediate attention. As attackers continuously look for ways to exploit vulnerabilities, timely patching is critical to maintaining security posture.

Signal

Status

Known Exploit

No

Public PoC

No

Actively Exploited

No

Ransomware Use

No

Affected Versions

All versions of Google Chrome prior to 136.0.7103.59 are affected by this vulnerability. Organizations should ensure that they are using the latest version to mitigate potential risks.

Mitigation & Remediation

To remediate this vulnerability, organizations should upgrade to the latest version of Google Chrome. If immediate upgrading is not possible, organizations can implement network controls to limit access to potentially harmful sites. For additional security, employing continuous security testing can help identify and mitigate similar vulnerabilities in the future.

For further guidance on effective security strategies, organizations can refer to our penetration testing services.

Detection Guidance

Organizations should monitor for unusual log indicators, such as unexpected crashes or errors in Chrome, which may indicate attempts to exploit this vulnerability. Behavioral anomalies in user sessions and system changes should also be flagged for review.

AppSecure Threat Intelligence Insight

The significance of CVE-2025-4096 lies in its potential to expose sensitive data and compromise system integrity. This vulnerability exemplifies the ongoing challenges faced by organizations in securing browser applications, which are often targeted by attackers.

Security teams should learn from this incident to enhance their defensive strategies, emphasizing the importance of timely updates and continuous security assessments. For further insights on vulnerability management, organizations may explore our resources on vulnerability management programs and the latest trends in penetration testing methodologies. Additionally, consider implementing cloud security best practices to further bolster your defenses.

Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.

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