CVE-2013-3949

2.1 LOW 0.5% exploit odds No fix listed

What it is

The posix_spawn system call in the XNU kernel in Apple Mac OS X 10.8.x does not prevent use of the _POSIX_SPAWN_DISABLE_ASLR and _POSIX_SPAWN_ALLOW_DATA_EXEC flags for setuid and setgid programs, which allows local users to bypass intended access restrictions via a wrapper program that calls the posix_spawnattr_setflags function.

At a glance

Exploitability: Can be exploited locally on the machine without logging in. Limited direct impact.
Exploit odds: 0.5% chance of exploitation in the next 30 days (EPSS).
Fix: No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

2013-06-05 14:39 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-16 23:56 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 0.5% in the next 30 days (EPSS).
Severity: 2.1 LOW (CVSS).
Fix: none linked yet, which raises it.

Details

Published: 2013-06-05 14:39 UTC
Last modified: 2026-06-16 23:56 UTC
Exploit probability: 0.5% · EPSS, next 30 days
Weakness: CWE-264
Record status: Modified

Affected

Apple Mac Os X 10.8.0
Apple Mac Os X 10.8.1
Apple Mac Os X 10.8.2
Apple Mac Os X 10.8.3
Apple Mac Os X 10.8.4

Attack profile CVSS 2.0 · 2.1

Attack vector: Local
Complexity: Low
Authentication: None
Confidentiality: None
Integrity: Partial
Availability: None

Raw vector

AV:L/AC:L/Au:N/C:N/I:P/A:N

Is it in your code?

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Read https://cve-list.com/agent/cve/CVE-2013-3949.md and follow it. Check whether this project is affected by CVE-2013-3949. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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References

NVD record · CVE.org record