SB20250709101 - Heap-based buffer overflow in Microsoft SPNEGO Extended Negotiation (NEGOEX) Security Mechanism
Published: July 9, 2025
Security Bulletin ID
SB20250709101
Severity
High
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Heap-based buffer overflow (CVE-ID: CVE-2025-47981)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in SPNEGO Extended Negotiation (NEGOEX) Security Mechanism. A remote attacker can send a specially crafted message to the server, trigger a heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install update from vendor's website.