Horizon Alert
Summary of the vulnerability and why it matters
Microsoft Internet Explorer contains a flaw that can expose sensitive information. This vulnerability can allow attackers to retrieve data from the system's memory when users visit a malicious website. Organizations could face risks if sensitive information is disclosed.
- Vulnerable web browser component
- Flaw allows information disclosure
- Business risk from sensitive data exposure
Attack Path
How an attacker could exploit the issue
This vulnerability allows attackers to access sensitive information from process memory. An attacker can craft a malicious website that, when visited by an organization's employee using an affected browser, can lead to the disclosure of sensitive data. This could potentially expose confidential business information residing in the browser's memory.
- Affected browser exposed externally.
- Attacker directs user to a malicious site.
- Sensitive data is disclosed.
Live Threat
Current exploitation, exposure, and threat context
This vulnerability allows remote attackers to access sensitive information from process memory by directing users to a specially crafted website. This could lead to the exposure of confidential data within the affected system. Given the nature of the vulnerability and its presence in the CISA Known Exploited Vulnerabilities catalog, organizations should consider addressing it with a degree of urgency.
- Attackers may possess moderate skill.
- Requires user interaction with a malicious site.
- Business risk or urgency: Medium.
Priority actions
Operational Fix
Recommended remediation, mitigation, and detection steps
Microsoft Internet Explorer versions 9 through 11 contain a vulnerability that could allow remote attackers to obtain sensitive information from process memory. This is achieved by directing an affected system to a specially crafted website. The potential for information disclosure poses a business risk to organizations utilizing these browser versions.
- Identify systems using Internet Explorer 9, 10, or 11.
- Restrict access to suspicious websites.
- Apply vendor updates to mitigate the vulnerability.
- Confirm the successful implementation of updates.
- Monitor for related security events.
