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.
Volume of CVEs assigned to CWE-403 and their average CVSS base score over time.
Top CVEs that have been assigned this CWE. A single CVE can have multiple CWE assignments, though many have just one.
6 CVEs · Highest risk first
| CVE | Published | CVSS | Risk | KEV | Exploit |
|---|---|---|---|---|---|
CVE-2024-21626HIGH 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 | Jan 31, 2024 | 8.6 | 54 | NO | YES |
CVE-2026-12296CRITICAL 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. | Jun 16, 2026 | 9.6 | 34 | NO | NO |
CVE-2026-40042CRITICAL 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 | Apr 13, 2026 | 9.8 | 33 | NO | NO |
CVE-2025-15114CRITICAL 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 | Dec 30, 2025 | 9.8 | 32 | NO | NO |
CVE-2024-58280HIGH 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 ' | Dec 10, 2025 | 8.8 | 28 | NO | NO |
CVE-2025-3032HIGH 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 | Apr 1, 2025 | 7.4 | 21 | NO | NO |
Exploit activity across CVEs assigned to this CWE, including CVEs that carry other CWE assignments.
Social posts that mention CVE IDs assigned to this CWE. This is assigned-CVE activity, not mentions of the CWE label itself.
Media articles that mention CVE IDs assigned to this CWE. This is assigned-CVE coverage, not mentions of the CWE label itself.