CVE-2025-34092 Vulnerability Analysis & Exploit Details

CVE-2025-34092 Vulnerability Summary

CVE-2025-34092: A cookie encryption bypass vulnerability exists in Google Chrome’s AppBound mechanism due to weak path validation logic within the elevation service. When Chrome encrypts a cookie key, it records its own executable path as validation metadata. Later, when decrypting, the elevation service compares the requesting process’s path to this stored path. However, due to path canonicalization inconsistencies, an attacker can impersonate Chrome (e.g., by naming their binary chrome.exe and placing it in a similar path) and successfully retrieve the encrypted cookie key. This allows malicious processes to retrieve cookies intended to be restricted to the Chrome process only. Confirmed in Google Chrome with AppBound Encryption enabled. Other Chromium-based browsers may be affected if they implement similar COM-based encryption mechanisms.

CVE-2025-34092 References

External References

• https://vulncheck.com/advisories/google-chrome-appbound-cookie-encryption
• https://www.cyberark.com/resources/threat-research-blog/c4-bomb-blowing-up-chromes-appbound-cookie-encryption

CWE Common Weakness Enumeration

CAPEC Common Attack Pattern Enumeration and Classification

• Redirect Access to Libraries CAPEC-159 An adversary exploits a weakness in the way an application searches for external libraries to manipulate the execution flow to point to an adversary supplied library or code base. This pattern of attack allows the adversary to compromise the application or server via the execution of unauthorized code. An application typically makes calls to functions that are a part of libraries external to the application. These libraries may be part of the operating system or they may be third party libraries. If an adversary can redirect an application's attempts to access these libraries to other libraries that the adversary supplies, the adversary will be able to force the targeted application to execute arbitrary code. This is especially dangerous if the targeted application has enhanced privileges. Access can be redirected through a number of techniques, including the use of symbolic links, search path modification, and relative path manipulation.
• Create files with the same name as files protected with a higher classification CAPEC-177 An attacker exploits file location algorithms in an operating system or application by creating a file with the same name as a protected or privileged file. The attacker could manipulate the system if the attacker-created file is trusted by the operating system or an application component that attempts to load the original file. Applications often load or include external files, such as libraries or configuration files. These files should be protected against malicious manipulation. However, if the application only uses the name of the file when locating it, an attacker may be able to create a file with the same name and place it in a directory that the application will search before the directory with the legitimate file is searched. Because the attackers' file is discovered first, it would be used by the target application. This attack can be extremely destructive if the referenced file is executable and/or is granted special privileges based solely on having a particular name.
• Passing Local Filenames to Functions That Expect a URL CAPEC-48 This attack relies on client side code to access local files and resources instead of URLs. When the client browser is expecting a URL string, but instead receives a request for a local file, that execution is likely to occur in the browser process space with the browser's authority to local files. The attacker can send the results of this request to the local files out to a site that they control. This attack may be used to steal sensitive authentication data (either local or remote), or to gain system profile information to launch further attacks.
• DLL Side-Loading CAPEC-641 An adversary places a malicious version of a Dynamic-Link Library (DLL) in the Windows Side-by-Side (WinSxS) directory to trick the operating system into loading this malicious DLL instead of a legitimate DLL. Programs specify the location of the DLLs to load via the use of WinSxS manifests or DLL redirection and if they aren't used then Windows searches in a predefined set of directories to locate the file. If the applications improperly specify a required DLL or WinSxS manifests aren't explicit about the characteristics of the DLL to be loaded, they can be vulnerable to side-loading.

Other 5 Recently Published CVEs Vulnerabilities

• CVE-2025-5944 – The Element Pack Addons for Elementor plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘data-caption’ attribute in all ver...
• CVE-2025-52842 – Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Laundry on Linux, MacOS allows Account...
• CVE-2025-52559 – Zulip is an open-source team chat application. From versions 2.0.0-rc1 to before 10.4 in Zulip Server, the /digest/ URL of a server shows a preview...
• CVE-2025-43025 – HP Universal Print Driver is potentially vulnerable to denial of service due to buffer overflow in versions of UPD 7.4 or older (e.g., v7.3.x, v7.2...
• CVE-2025-34092 – A cookie encryption bypass vulnerability exists in Google Chrome’s AppBound mechanism due to weak path validation logic within the elevation servic...