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CVE-2008-4220

25
FAUCET Score

CVE-2008-4220 describes an integer overflow vulnerability in the inet_net_pton API within Libsystem in Apple Mac OS X versions prior to 10.5.6. This flaw allows attackers to execute arbitrary code or cause a denial of service (application crash) through unspecified vectors. The vulnerability carries a critical CVSS score of 10.0, indicating a severe risk with network-based attacks requiring low complexity and no authentication, leading to complete compromise of confidentiality, integrity, and availability. Its FAUCET Risk Score is 81/100, and it is categorized under CWE-189 (Improper Handling of Exceptional Conditions). There is no evidence of active exploitation, nor is exploit code available on platforms like Metasploit or ExploitDB. The vulnerability has received minimal community discussion and media coverage, suggesting it has not been a prominent threat.

Impacted Technologies

VendorProductVersion(s)CPE
<= 10.5.5CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
10.4.11CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:10.4.11:*:*:*:*:*:*:*
10.5CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:10.5:*:*:*:*:*:*:*
10.5.1CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:10.5.1:*:*:*:*:*:*:*
10.5.2CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:10.5.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

10.0HIGH

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

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.51%
Probability of exploitation in next 30 days
EPSS Percentile
88.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0351 is in the 79th percentile among its peer group of 51,553 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, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

applevendor investigatingvia nvd_reference
View patch

References

lists.apple.com / archives/security-announce//2008//Dec/msg00000.html
Vendor Advisory
secunia.com / advisories/33179
Vendor Advisory
support.apple.com / kb/HT3338
Vendor Advisory
securityfocus.com / bid/32839
securityfocus.com / bid/32877
securitytracker.com / id
us-cert.gov / cas/techalerts/TA08-350A.html
US Government Resource
vupen.com / english/advisories/2008/3444