CWE-403 Exposure of File Descriptor to Unintended Control Sphere ('File Descriptor Leak')

base

A process does not close sensitive file descriptors before invoking a child process, which allows the child to perform unauthorized I/O operations using those descriptors.

01

parent weaknesses

Broader classes this is a kind of.

02

vulnerabilities (9)

Known CVEs related to this entry.

IDseverity exploitable
CVE-2024-21626UShigh8.6Exploit
runc is a CLI tool for spawning and running containers on Linux according to the OCI specification. In runc 1.1.11 and earlier, due to an internal file descriptor leak, an attacker…
CVE-2024-58280UShigh8.8—
CMSimple 5.15 contains a remote command execution vulnerability that allows authenticated attackers to modify file extensions and upload malicious PHP files. Attackers can append '…
CVE-2021-4115USmedium5.5—
There is a flaw in polkit which can allow an unprivileged user to cause polkit to crash, due to process file descriptor exhaustion. The highest threat from this vulnerability is to…
CVE-2026-33263US——
When mail_max_userip_connections is set (default 10) and reached, submission-login can crash with epoll() panic caused by file descriptor handling issues. If running in high-securi…
CVE-2026-16526US——
A flaw in the PCP linux_sockets module exposes an unsecured internal connection. An attacker with initial code execution can exploit this to escalate privileges and execute arbitra…
CVE-2026-12296US——
Sandbox escape in the Security: Process Sandboxing component. This vulnerability was fixed in Firefox 152, Firefox ESR 140.12, Thunderbird 152, and Thunderbird 140.12.
CVE-2026-40042US——
Pachno 1.0.6 contains an XML external entity injection vulnerability that allows unauthenticated attackers to read arbitrary files by exploiting unsafe XML parsing in the TextParse…
CVE-2025-15114US——
Ksenia Security lares (legacy model) Home Automation version 1.6 contains a critical security flaw that exposes the alarm system PIN in the 'basisInfo' XML file after authenticatio…
CVE-2025-3032US——
Leaking of file descriptors from the fork server to web content processes could allow for privilege escalation attacks. This vulnerability was fixed in Firefox 137 and Thunderbird…
03

source

Where this definition is published.

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