SPNEGO Extended Negotiation (NEGOEX) Security Mechanism Remote Code Execution Vulnerability
Released: Jan 14, 2025
- Assigning CNA
- Microsoft
- CVE.org link
- CVE-2025-21295
- Impact
- Remote Code Execution
- Max Severity
- Critical
- Weakness
- CVSS Source
- Microsoft
- Vector String
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
- Metrics
- CVSS:3.1 8.1 / 7.1Base score metrics: 8.1 / Temporal score metrics: 7.1
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Exploit Code Maturity
Unproven
Remediation Level
Official Fix
Report Confidence
Confirmed
Please see Common Vulnerability Scoring System for more information on the definition of these metrics.
Exploitability
The following table provides an exploitability assessment for this vulnerability at the time of original publication.
- Publicly disclosed
- No
- Exploited
- No
- Exploitability assessment
- Exploitation Less Likely
FAQ
According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?
Successful exploitation of this vulnerability requires an attacker to manipulate system operations in a specific manner.
How could an attacker exploit the vulnerability?
An attacker who successfully exploits this vulnerability could achieve remote code execution without user interaction.
Acknowledgements
- Yuki Chen
Security Updates
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle.
- 6.3.9600.22371
- 6.3.9600.22371
- 6.2.9200.25273
- 6.2.9200.25273
- 6.1.7601.27520
- 6.1.7601.27520
- 6.1.7601.27520
- 6.1.7601.27520
- 10.0.14393.7699
- 10.0.14393.7699
- 10.0.14393.7699
- 10.0.14393.7699
- 10.0.10240.20890
- 10.0.10240.20890
- 10.0.26100.2894
- 10.0.26100.2894
- 10.0.26100.2894
- 10.0.25398.1369
- 10.0.22631.4751
- 10.0.22631.4751
- 10.0.26100.2894
- 10.0.19045.5371
- 10.0.19045.5371
- 10.0.19045.5371
- 10.0.22621.4751
- 10.0.22621.4751
- 10.0.19044.5371
- 10.0.19044.5371
- 10.0.19044.5371
- 10.0.20348.3091
- 10.0.20348.3091
- 10.0.17763.6775
- 10.0.17763.6775
- 10.0.17763.6775
- 10.0.17763.6775
Disclaimer
Revisions
Information published.