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CVE-2015-6983

22
FAUCET Score

CVE-2015-6983 describes a double free vulnerability in Apple iOS before 9.1 and OS X before 10.11.1, allowing a malicious application to write to arbitrary files by manipulating AtomicBufferedFile descriptors. This vulnerability carries a CVSS score of 8.8, indicating high severity due to its network-based attack vector, medium attack complexity, and complete compromise of integrity and availability. Despite its critical nature, there is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 9.0.2CPE matchmatch criteria
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
<= 10.11.0CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

8.8HIGH

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

Confidentiality Impact
NONE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
9.2
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.76%
Probability of exploitation in next 30 days
EPSS Percentile
75.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0176 is in the 34th percentile among its peer group of 8,920 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 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/2015/Oct/msg00002.html
Vendor Advisory
lists.apple.com / archives/security-announce/2015/Oct/msg00005.html
Vendor Advisory
support.apple.com / HT205370
Vendor Advisory
support.apple.com / HT205375
Vendor Advisory
securityfocus.com / bid/77263
securitytracker.com / id/1033929