CVE-2023-28285: Microsoft Office 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
2023-Apr
Released
2023-04-11
Last Updated
2023-04-11
EPSS Score
1.57% (percentile: 81.6%)

FAQ

Is the Preview Pane an attack vector for this vulnerability? No, the Preview Pane is not an attack vector. 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. This means an attacker or victim needs to execute code from the local machine to exploit the vulnerability. According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do? A user needs to be tricked into running malicious files.

Affected Products (4)

Microsoft Office

  • Microsoft Office 2019 for Mac
  • Microsoft 365 Apps for Enterprise for 32-bit Systems
  • Microsoft 365 Apps for Enterprise for 64-bit Systems
  • Microsoft Office LTSC for Mac 2021

Security Updates (1)

Acknowledgments

Michael DePlante (@izobashi) of <a href="https://www.zerodayinitiative.com/">Trend Micro Zero Day Initiative</a>, HAO LI of VenusTech ADLab, Kai Lu with Zscaler&#39;s ThreatLabz

Revision History

  • 2023-04-11: Information published.
  • 2023-04-11: Updated CVE title. This is an informational change only.