CVE-2015-5914 — The EFI component in Apple OS X before 10.11 allows physically proximate attackers to modify firmware during the EFI update process by inserting an Apple Ethernet Thunderbolt adapter with crafted code in an Option ROM, aka a "Thunderstrike" issue

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MEDIUM

The EFI component in Apple OS X before 10.11 allows physically proximate attackers to modify firmware during the EFI update process by inserting an Apple Ethernet Thunderbolt adapter with crafted code in an Option ROM, aka a "Thunderstrike" issue

Published Oct 9, 2015

4.7

MEDIUM

CVSS 2.0

EPSS 0.35%

Description

The EFI component in Apple OS X before 10.11 allows physically proximate attackers to modify firmware during the EFI update process by inserting an Apple Ethernet Thunderbolt adapter with crafted code in an Option ROM, aka a "Thunderstrike" issue. NOTE: this issue exists because of an incomplete fix for CVE-2014-4498.

Affected products

Remediation

No remediation recorded yet.

Metrics

0.35% 0.00352

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.

EPSS probability 0.00352

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 3, 2026	0.35% (0.00352)	26.55th	v5 (v2026.06.15)
Jun 15, 2026	0.35% (0.00352)	26.82th	v5 (v2026.06.15)
Mar 17, 2025	0.14% (0.00142)	31.75th	v4 (v2025.03.14)
Dec 12, 2024	0.11% (0.00111)	45.99th	v3 (v2023.03.01)
Jun 20, 2024	0.11% (0.00111)	44.58th	v3 (v2023.03.01)
Mar 7, 2023	0.11% (0.00111)	42.58th	v3 (v2023.03.01)
Mar 6, 2023	1.02% (0.01018)	40.69th	v2 (v2022.01.01)
Sep 10, 2022	1.02% (0.01018)	38.88th	v2 (v2022.01.01)
Apr 1, 2022	1.02% (0.01018)	36.86th	v2 (v2022.01.01)
Feb 4, 2022	1.02% (0.01018)	19.50th	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.securitytracker.com/id/1033703
vdb-entryx_refsource_SECTRACK
https://support.apple.com/HT205267
x_refsource_CONFIRMVendor Advisory
https://trmm.net/Thunderstrike_FAQ
x_refsource_MISC

Link	Providers	Tags
http://lists.apple.com/archives/security-announce/2015/Sep/msg00008.html		vendor-advisoryx_refsource_APPLEVendor Advisory
http://www.securitytracker.com/id/1033703		vdb-entryx_refsource_SECTRACK
https://support.apple.com/HT205267		x_refsource_CONFIRMVendor Advisory
https://trmm.net/Thunderstrike_FAQ		x_refsource_MISC

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-2015-5914

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2015-5914

Red Hat

Severity n/a

Public date n/a

Links CVE-2015-5914