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CVE-2016-1777

20
FAUCET Score

CVE-2016-1777 describes a vulnerability in the Web Server component of Apple OS X Server before version 5.1, where it supports the RC4 algorithm. This weakness allows remote attackers to more easily bypass cryptographic protections. With a CVSS score of 7.5 (High), this vulnerability has a low attack complexity and could lead to high confidentiality impact, though integrity and availability are not affected. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or inclusion in CISA's KEV catalog. Community discussion and media coverage are minimal.

Impacted Technologies

VendorProductVersion(s)CPE
<= 5.0.15CPE matchmatch criteria
cpe:2.3:o:apple:mac_os_x_server:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.00%
Probability of exploitation in next 30 days
EPSS Percentile
78.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0200 is in the 62nd percentile among its peer group of 51,506 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

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/2016/Mar/msg00006.html
Vendor Advisory
support.apple.com / HT206173
Vendor Advisory
securityfocus.com / bid/85054
securitytracker.com / id/1035342