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CVE-2013-3954

18
FAUCET Score

CVE-2013-3954 describes a vulnerability in the posix_spawn system call within the XNU kernel of Apple Mac OS X 10.8.x and iPhone OS. This flaw allows local users to trigger a denial of service (kernel panic) or extract sensitive information from kernel heap memory due to improper validation of file and port action data. With a CVSS score of 6.9, this vulnerability is considered high severity, requiring local access and medium attack complexity to achieve complete confidentiality, integrity, and availability impacts. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
10.8.0CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:10.8.0:*:*:*:*:*:*:*
10.8.1CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:10.8.1:*:*:*:*:*:*:*
10.8.2CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:10.8.2:*:*:*:*:*:*:*
10.8.3CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:10.8.3:*:*:*:*:*:*:*
10.8.4CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:10.8.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.9MEDIUM

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

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
3.4
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.42%
Probability of exploitation in next 30 days
EPSS Percentile
34.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0042 is in the 64th percentile among its peer group of 1,595 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

antid0te.com / syscan_2013/SyScan2013_Mountain_Lion_iOS_Vulnerabilities_Garage_Sale_Whitepaper.pdf
Exploit
lists.apple.com / archives/security-announce/2013/Oct/msg00004.html
lists.apple.com / archives/security-announce/2013/Sep/msg00006.html
secunia.com / advisories/54886
support.apple.com / kb/HT5934
securitytracker.com / id/1029054
syscan.org / index.php/sg/program/day/2