Microsoft Windows Out-of-Bounds Write Vulnerability

Technical Severity

CVSS v3.1 Metrics

HIGH

8.8 / 10

Minimal Risk Critical

Vector Specification

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploitation Likelihood

EPSS Prediction

86.10 %

Predictive Probability

Percentile Rank

99.4 th

Documented as more likely to be exploited than 99.4% of known CVEs.

Detection Date

Oct 06, 2025

Remediation Due

Oct 27, 2025

CISA Catalog Active

Threat Analysis

Microsoft Windows contains an out-of-bounds write vulnerability in the InformationCardSigninHelper Class ActiveX control, icardie.dll. An attacker could exploit the vulnerability by constructing a specially crafted webpage. When a user views the webpage, the vulnerability could allow remote code execution. An attacker who successfully exploited this vulnerability could gain the same user rights as the current user. The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization.

Remediation Directive

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

External Intelligence

https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-090

NVD

National Vulnerability Database

https://nvd.nist.gov/vuln/detail/CVE-2013-3918