Google Chrome CVE-2025-2783: Critical Sandbox Escape Vulnerability Exploited in the Wild

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has flagged a newly discovered vulnerability in Google Chrome, tracked as CVE-2025-2783, as a significant security threat. This vulnerability, categorized as a high-severity sandbox escape, is already being actively exploited in cyberattacks, primarily targeting organizations in Russia.

Google has responded swiftly by rolling out out-of-band security patches to mitigate the risk. The flaw stems from an incorrect handle provided under unspecified conditions in Mojo, an interprocess communication (IPC) library crucial for Chromium-based browsers. With attackers leveraging this weakness for sandbox escapes and potential privilege escalation, both governmental and private organizations are urged to take immediate action.

the CVE-2025-2783 Vulnerability

Discovery & Reporting: The vulnerability was first reported on March 20, 2025, by Kaspersky researchers Boris Larin (@oct0xor) and Igor Kuznetsov (@2igosha).
Nature of the Vulnerability: It affects Mojo, the IPC system used in Chromium-based browsers to facilitate secure communication between sandboxed processes. A flaw in its handling mechanism allows attackers to bypass security restrictions and escalate privileges.
Affected Systems: The issue specifically impacts Google Chrome on Windows.
Exploitation in the Wild: Google confirmed that CVE-2025-2783 is actively exploited, though details about the attackers remain undisclosed.
Security Patch: Google has updated the Stable Channel to version 134.0.6998.177/.178 for Windows, with the rollout expected to complete in the coming days or weeks. A full changelog is available in Google’s update log.
Governmental Directive: Under Binding Operational Directive (BOD) 22-01, U.S. federal agencies are required to patch this vulnerability by April 17, 2025, ensuring their systems remain secure from known exploits.

The urgency of addressing this flaw is emphasized by CISA’s decision to include it in the Known Exploited Vulnerabilities (KEV) catalog, which lists vulnerabilities that pose a critical risk to national and private-sector security. Security experts also recommend that private enterprises take immediate measures to patch their systems against potential cyberattacks.

What Undercode Say:

The inclusion of CVE-2025-2783 in CISA’s KEV catalog highlights the increasing sophistication of cyber threats and the persistent targeting of browser vulnerabilities. This incident provides key takeaways regarding browser security, patch management, and the broader implications of sandbox escapes in modern cybersecurity.

1. Browser Vulnerabilities Remain a Top Attack Vector

Chromium-based browsers like Chrome are a prime target for cybercriminals due to their widespread use.
Attackers exploit sandbox vulnerabilities to bypass security layers, allowing them to execute arbitrary code or escalate privileges.
Organizations relying on web-based services should implement strict patching policies and consider additional browser isolation strategies.

2. Mojo IPC: A Security Double-Edged Sword

– Mojo serves a crucial role in

However, any flaw in its implementation, such as incorrect handle management, can lead to sandbox escapes, undermining Chrome’s security model.
The fact that Mojo has been exploited in previous attacks suggests a recurring attack surface that requires closer scrutiny.

3. Zero-Day Exploitation Trends

The rapid weaponization of vulnerabilities like CVE-2025-2783 reinforces the growing market for zero-day exploits.
Threat actors, whether state-sponsored or cybercriminal groups, increasingly seek unpatched browser flaws to infiltrate networks.
Organizations must adopt proactive security measures, such as behavioral analysis tools and real-time monitoring, to detect suspicious browser-based activities.

4. Google’s Response: Speed vs. Transparency

Google’s quick patch release is commendable, demonstrating the company’s commitment to security.
However, the lack of detailed threat intelligence on the attackers raises concerns about the extent of the compromise.
Transparency in detailing attack methodologies could help security teams worldwide better prepare for similar threats.

5. Implications for Federal and Private Sectors

The April 17, 2025 deadline for federal agencies to patch their systems underscores the severity of the vulnerability.
Private companies should not wait for regulatory mandates—patching should be immediate to prevent potential exploitation.
Security training for employees regarding browser-based attacks can further reduce the likelihood of successful exploits.

6. Future of Chrome’s Security Model

Google may need to reassess the security framework surrounding Mojo to prevent recurring sandbox escape vulnerabilities.
The integration of AI-driven anomaly detection could enhance Chrome’s ability to identify potential exploit attempts in real-time.
Strengthening sandboxing mechanisms and refining IPC communications should be a top priority moving forward.

Fact Checker Results

CVE-2025-2783 is officially listed in CISA’s KEV catalog, confirming its status as a known exploited vulnerability. ✅
Google has released security updates (Chrome 134.0.6998.177/.178) to mitigate the flaw, with distribution ongoing. ✅
CISA mandates federal agencies to patch by April 17, 2025, aligning with past emergency security directives. ✅

References:

Reported By: https://securityaffairs.com/175936/security/u-s-cisa-adds-google-chromium-mojo-flaw-to-its-known-exploited-vulnerabilities-catalog.html
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