CVE-2025-10891 in Chrome
Summary
by MITRE • 09/24/2025
Integer overflow in V8 in Google Chrome prior to 140.0.7339.207 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)
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Analysis
by VulDB Data Team • 11/03/2025
The vulnerability identified as CVE-2025-10891 represents a critical integer overflow condition within the V8 JavaScript engine used in Google Chrome browsers. This flaw exists in versions prior to 140.0.7339.207 and demonstrates a high severity classification within the Chromium security framework. The vulnerability stems from improper handling of integer arithmetic operations that can lead to unexpected behavior when processing crafted input data. Attackers can leverage this weakness by constructing malicious HTML pages that trigger the overflow condition during normal browser execution, potentially leading to arbitrary code execution or system compromise.
The technical implementation of this vulnerability involves the V8 engine's handling of integer values during memory allocation and manipulation processes. When integer overflow occurs, the normal arithmetic progression that should maintain memory boundaries and buffer sizes breaks down, creating opportunities for heap corruption. This type of vulnerability falls under the CWE-190 category of Integer Overflow or Wraparound, which specifically addresses situations where integer arithmetic operations produce results that exceed the maximum value representable by the data type. The flaw manifests when the JavaScript engine processes certain mathematical operations that should remain within safe boundaries but instead cause integer values to wrap around to unexpected negative or excessively large values.
The operational impact of this vulnerability extends beyond simple browser exploitation to potentially enable sophisticated attack vectors including remote code execution and privilege escalation. An attacker requiring no user interaction can deliver malicious content through web pages, making this particularly dangerous in environments where users browse untrusted websites. The heap corruption resulting from integer overflow can be leveraged to manipulate memory layout and potentially overwrite critical program structures or function pointers. This vulnerability aligns with ATT&CK technique T1059.007 for JavaScript and T1203 for Exploitation for Client Execution, demonstrating how attackers can utilize browser-based exploitation techniques to gain unauthorized access to systems. The remote nature of the attack means that victims need not interact with malicious content directly, as simply loading a compromised webpage can trigger the exploitation sequence.
Mitigation strategies for CVE-2025-10891 primarily focus on immediate browser updates to versions 140.0.7339.207 or later, where the integer overflow handling has been corrected. Organizations should implement comprehensive patch management processes to ensure all Chrome installations are updated promptly. Additional defensive measures include deploying web application firewalls that can detect and block suspicious JavaScript patterns, implementing strict content security policies that limit script execution, and utilizing sandboxing mechanisms that isolate browser processes from critical system resources. Network administrators should monitor for indicators of compromise related to this vulnerability and maintain updated threat intelligence feeds to detect potential exploitation attempts. The vulnerability highlights the importance of regular security assessments and continuous monitoring of browser-based attack surfaces, particularly given that V8 engine vulnerabilities often represent high-value targets for advanced persistent threat actors due to their potential for widespread impact and exploitation.