CVE-2015-5887 — The TLS Handshake Protocol implementation in Secure Transport in Apple OS X before 10.11 accepts a Certificate Request message within a session in which no Server Key Exchange message has been sent, which allows remote attackers to have an unspecified impact via crafted TLS data

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HIGH

The TLS Handshake Protocol implementation in Secure Transport in Apple OS X before 10.11 accepts a Certificate Request message within a session in which no Server Key Exchange message has been sent, which allows remote attackers to have an unspecified impact via crafted TLS data

Published Oct 9, 2015

10.0

HIGH

CVSS 2.0

EPSS 2.46%

Description

The TLS Handshake Protocol implementation in Secure Transport in Apple OS X before 10.11 accepts a Certificate Request message within a session in which no Server Key Exchange message has been sent, which allows remote attackers to have an unspecified impact via crafted TLS data.

Affected products

Remediation

No remediation recorded yet.

Metrics

2.46% 0.02461

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.02461

Score over time

2022–2026

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Percentile over time

EPSS v2
EPSS v3
EPSS v4
EPSS v5

Table of values (10 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	2.46% (0.02461)	83.87th	v5 (v2026.06.15)
Jun 15, 2026	2.46% (0.02461)	82.30th	v5 (v2026.06.15)
Mar 17, 2025	0.71% (0.00708)	70.52th	v4 (v2025.03.14)
Dec 12, 2024	0.65% (0.00651)	80.12th	v3 (v2023.03.01)
Feb 8, 2024	0.65% (0.00651)	78.76th	v3 (v2023.03.01)
Mar 7, 2023	0.65% (0.00651)	76.24th	v3 (v2023.03.01)
Mar 6, 2023	1.21% (0.01213)	66.61th	v2 (v2022.01.01)
Feb 17, 2023	1.21% (0.01213)	66.22th	v2 (v2022.01.01)
Apr 1, 2022	1.21% (0.01213)	64.21th	v2 (v2022.01.01)
Feb 4, 2022	1.21% (0.01213)	40.54th	v2 (v2022.01.01)

Weaknesses (1)

CWE-17

References (4)

http://lists.apple.com/archives/security-announce/2015/Sep/msg00008.html
vendor-advisoryx_refsource_APPLEVendor Advisory
http://www.securityfocus.com/bid/76908
vdb-entryx_refsource_BID
http://www.securitytracker.com/id/1033703
vdb-entryx_refsource_SECTRACK
https://support.apple.com/HT205267
x_refsource_CONFIRMVendor Advisory

Link	Providers	Tags
http://lists.apple.com/archives/security-announce/2015/Sep/msg00008.html		vendor-advisoryx_refsource_APPLEVendor Advisory
http://www.securityfocus.com/bid/76908		vdb-entryx_refsource_BID
http://www.securitytracker.com/id/1033703		vdb-entryx_refsource_SECTRACK
https://support.apple.com/HT205267		x_refsource_CONFIRMVendor Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner apple

Published Oct 9, 2015

Updated Aug 6, 2024

Reserved Aug 6, 2015

Link CVE-2015-5887

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2015-5887

Red Hat

Severity n/a

Public date n/a

Links CVE-2015-5887