Critical Alert 3 Active Exploits Detected Today

CVE-2025-39964 Linux Kernel Race Condition Vulnerability →
CVE-2026-53266 Linux Kernel Out-of-Bounds Write Vulnerability →
CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Vulnerability →
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CVE-2026-91203NVD

Vulnerability Summary

A flaw was found in cockpit-files. This vulnerability allows a local attacker to exploit a timing issue, known as a symlink race condition, during privileged file operations such as changing file ownership or permissions. By manipulating directory entries and winning this race, the attacker can redirect these operations to unintended files. This could lead to unauthorized changes in file ownership and permissions on arbitrary files, potentially compromising system integrity and availability by altering system or application states or rendering services unusable.
Severity Level
MEDIUM(6.0)
Published Date
Sep 18, 2026
Last Modified
Sep 18, 2026
Exploitation Status
No confirmed exploitation yet
EPSS Score (30-Day)
0.08%Probability
Root Weakness (CWE)
N/A
CVSS v3.1 Base Metrics
Attack VectorLocal
Attack ComplexityHigh
Privileges RequiredLow
User InteractionRequired
ScopeUnchanged
ConfidentialityNone
IntegrityHigh
AvailabilityHigh
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💬Webhooks — Slack & Teams integration.
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