High Severity Vulnerability
This vulnerability has been rated as High severity. Immediate action is recommended.
CVE-2026-23657
High
Low
Medium
High
Critical
7.8
CVSS Score
Vulnerability Description
Use after free in Microsoft Office Word allows an unauthorized attacker to execute code locally.
CVSS Metrics
Common Vulnerability Scoring System
Vector String:
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector
L
Attack Complexity
L
Privileges Required
N
User Interaction
R
Scope
U
Confidentiality
H
Integrity
H
Availability
H
Known Affected Software
2 configuration(s) from 1 vendor(s)
office_long_term_servicing_channel
Version:
2024
CPE:
cpe:2.3:a:microsoft:office_long_term_servicing_channel:2024:*:*:*:*:-:x64:*
365_apps
Version:
-
CPE:
cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:x64:*
This vulnerability affects 2 software configuration(s). Ensure you patch all affected systems.
Severity Details
7.8
out of 10.0
High
Weakness Type (CWE)
CWE-416
Top 25 #12
Use After Free
- Description
- The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations…
- Exploit Likelihood
- High
- Typical Severity
- High
- Abstraction Level
- Variant
Key Information
- Published Date
- April 14, 2026
