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CVE-2015-5913

18
FAUCET Score

CVE-2015-5913 describes a replay attack vulnerability in Heimdal, specifically affecting Apple OS X before version 10.11. This flaw allows remote attackers to reuse Kerberos authenticated requests against the SMB server. With a CVSS score of 6.8 (medium severity), successful exploitation could lead to partial compromise of confidentiality, integrity, and availability, requiring medium attack complexity. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 10.10.5CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.8MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.83%
Probability of exploitation in next 30 days
EPSS Percentile
76.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0183 is in the 57th percentile among its peer group of 19,958 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 0.2 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

Vendor Patches (1)

applevendor investigatingvia nvd_reference
View patch

References

lists.apple.com / archives/security-announce/2015/Sep/msg00008.html
Vendor Advisory
support.apple.com / HT205267
Vendor Advisory
securitytracker.com / id/1033703