CVE-2026-4878
MEDIUM
6,7
Source: [email protected]
Attack Vector: local
Attack Complexity: high
Privileges Required: low
User Interaction: required
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Description
AI Translation Available
A flaw was found in libcap. A local unprivileged user can exploit a Time-of-check-to-time-of-use (TOCTOU) race condition in the `cap_set_file()` function. This allows an attacker with write access to a parent directory to redirect file capability updates to an attacker-controlled file. By doing so, capabilities can be injected into or stripped from unintended executables, leading to privilege escalation.
EPSS (Exploit Prediction Scoring System)
Trend Analysis
EPSS (Exploit Prediction Scoring System)
Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.
EPSS Score
0,0001
Percentile
0,0th
Updated
EPSS Score Trend (Last 7 Days)
367
Time-of-check Time-of-use (TOCTOU) Race Condition
IncompleteCommon Consequences
Security Scopes Affected:
Integrity
Other
Non-Repudiation
Potential Impacts:
Alter Execution Logic
Unexpected State
Modify Application Data
Modify Files Or Directories
Modify Memory
Other
Hide Activities
Applicable Platforms
All platforms may be affected
http://www.openwall.com/lists/oss-security/2026/04/07/14
http://www.openwall.com/lists/oss-security/2026/04/07/4
http://www.openwall.com/lists/oss-security/2026/04/08/9
http://www.openwall.com/lists/oss-security/2026/04/09/5
http://www.openwall.com/lists/oss-security/2026/04/09/6
https://access.redhat.com/security/cve/CVE-2026-4878
https://bugzilla.redhat.com/show_bug.cgi?id=2447554
https://bugzilla.redhat.com/show_bug.cgi?id=2451615