CVE-2026-21253
HIGH
2026-02-10
[email protected]
7.0
CVSS 3.1
Share
CVSS Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Lifecycle Timeline
2
Analysis Generated
Mar 12, 2026 - 22:02 vuln.today
CVE Published
Feb 10, 2026 - 18:16 nvd
HIGH 7.0
Description
Use after free in Mailslot File System allows an authorized attacker to elevate privileges locally.
Analysis
Use after free in Mailslot File System allows an authorized attacker to elevate privileges locally. [CVSS 7.0 HIGH]
Sign in for full analysis, threat intelligence, and remediation guidance.
Remediation
Within 24 hours: Identify and inventory all Windows systems using Mailslot functionality and assess exposure; brief security and IT leadership on containment strategy. Within 7 days: Implement enhanced monitoring for unauthorized privilege escalation attempts; restrict Mailslot access through application whitelisting and least-privilege access controls where operationally feasible. …
Sign in for detailed remediation steps.
Priority Score
35
Low
Medium
High
Critical
KEV: 0
EPSS: +0.0
CVSS: +35
POC: 0
Share
External POC / Exploit Code
Leaving vuln.today
Destination URL
POC code from unknown sources may be malicious, contain backdoors, or be fake.
Always review and test exploit code in a safe, isolated environment (VM/sandbox).
Verify the source reputation and cross-reference with known databases (Exploit-DB, GitHub Security).