CVE-2025-21326: Internet Explorer Remote Code Execution Vulnerability

Overview

Severity
High (CVSS 7.8)
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Category
Remote Code Execution
Exploit Status
Not Exploited
Exploitation Likelihood
Less Likely
Patch Tuesday
2025-Jan
Released
2025-01-14
EPSS Score
0.56% (percentile: 68.3%)

FAQ

According to the CVSS metric, the attack vector is local (AV:L). Why does the CVE title indicate that this is a remote code execution? The word Remote in the title refers to the location of the attacker. This type of exploit is sometimes referred to as Arbitrary Code Execution (ACE). The attack itself is carried out locally. For example, when the score indicates that the Attack Vector is Local and User Interaction is Required, this could describe an exploit in which an attacker, through social engineering, convinces a victim to download and open a specially crafted file from a website which leads to a local attack on their computer. According to the CVSS metrics, successful exploitation of this vulnerability could lead to major loss of confidentiality (C:H), integrity (I:H), and availability (A:H). What does that mean for this vulnerability? An attacker who successfully exploited this vulnerability could gain high privileges, which include read, write, and delete functionality.

Affected Products (3)

Windows

  • Windows Server 2025
  • Windows Server 2025 (Server Core installation)
  • Windows Server 2022, 23H2 Edition (Server Core installation)

Security Updates (2)

Acknowledgments

<a href="https://twitter.com/jq0904">Quan Jin</a> with <a href="https://www.dbappsecurity.com.cn/product/cloud250.html">DBAPPSecurity WeBin Lab</a>

Revision History

  • 2025-01-14: Information published.