CVE-2010-0174 in Firefox
Summary
by MITRE
Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 3.0.19, 3.5.x before 3.5.9, and 3.6.x before 3.6.2; Thunderbird before 3.0.4; and SeaMonkey before 2.0.4 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.
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Analysis
by VulDB Data Team • 05/05/2026
The vulnerability identified as CVE-2010-0174 represents a critical security flaw affecting multiple Mozilla products including Firefox, Thunderbird, and SeaMonkey across several version ranges. This vulnerability resides within the browser engine component of these applications, specifically impacting versions prior to the mentioned security patches. The affected versions include Firefox 3.0.18 and earlier, Firefox 3.5.x versions before 3.5.9, Firefox 3.6.x versions before 3.6.2, Thunderbird 3.0.3 and earlier, and SeaMonkey 2.0.3 and earlier. The nature of this vulnerability stems from unspecified flaws in the rendering and processing mechanisms that handle various web content elements, making it particularly dangerous due to its potential to affect multiple products within the Mozilla ecosystem.
The technical flaw manifests through memory corruption issues that occur when the affected browser engines process certain web content or data structures. These memory corruption vulnerabilities typically arise from improper handling of user-supplied input, buffer overflows, or use-after-free conditions within the browser's rendering pipeline. The unspecified nature of the exact vectors suggests that attackers could exploit multiple different code paths within the browser engine to achieve the same outcome. The vulnerability allows remote attackers to trigger either denial of service conditions through application crashes or potentially more severe arbitrary code execution capabilities, depending on the specific exploitation scenario and target system configuration. This dual nature makes the vulnerability particularly concerning as it can be leveraged for both disruptive attacks and more sophisticated compromise attempts.
The operational impact of CVE-2010-0174 extends beyond simple service disruption to potentially enable full system compromise. When exploited, these vulnerabilities can cause browsers to crash and restart repeatedly, leading to denial of service for legitimate users. More critically, the potential for arbitrary code execution means that attackers could gain control over affected systems, potentially leading to complete system compromise, data theft, or further network infiltration. The widespread use of Firefox and related Mozilla products across enterprise and personal environments amplifies the potential impact, as a single exploited vulnerability could affect thousands of systems. Organizations relying on these browsers for web browsing activities would face significant security risks, particularly in environments where users might encounter malicious web content or be targeted through phishing campaigns.
Mitigation strategies for CVE-2010-0174 primarily focus on immediate remediation through software updates and patches. Organizations should prioritize upgrading to the patched versions of Firefox 3.0.19, Firefox 3.5.9, Firefox 3.6.2, Thunderbird 3.0.4, and SeaMonkey 2.0.4, which contain the necessary fixes for the identified memory corruption issues. Additionally, implementing network-based security controls such as web application firewalls and content filtering systems can provide additional layers of protection while awaiting patch deployment. Browser hardening techniques including disabling unnecessary plugins, implementing strict security policies, and using sandboxing mechanisms can help reduce the attack surface. Security monitoring should be enhanced to detect unusual browser behavior or crash patterns that might indicate exploitation attempts. The vulnerability aligns with CWE-119 which addresses "Improper Access to Memory" and potentially CWE-787 which covers "Out-of-bounds Write" conditions, while also mapping to ATT&CK techniques involving privilege escalation and remote code execution through browser exploitation. Organizations should also consider implementing security awareness training to reduce the risk of users inadvertently visiting malicious websites that could exploit these vulnerabilities.