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Vulnerability details: VCID-cz65-fw5b-huh6
Vulnerability ID VCID-cz65-fw5b-huh6
Aliases CVE-2018-4191
Summary A memory corruption issue was addressed with improved validation. This issue affected versions prior to iOS 12, tvOS 12, watchOS 5, Safari 12, iTunes 12.9 for Windows, iCloud for Windows 7.7.
Status Published
Exploitability 0.5
Weighted Severity 7.9
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
System Score Found at
epss 0.00704 https://api.first.org/data/v1/epss?cve=CVE-2018-4191
epss 0.00704 https://api.first.org/data/v1/epss?cve=CVE-2018-4191
epss 0.00704 https://api.first.org/data/v1/epss?cve=CVE-2018-4191
epss 0.00704 https://api.first.org/data/v1/epss?cve=CVE-2018-4191
epss 0.00704 https://api.first.org/data/v1/epss?cve=CVE-2018-4191
epss 0.00704 https://api.first.org/data/v1/epss?cve=CVE-2018-4191
epss 0.00704 https://api.first.org/data/v1/epss?cve=CVE-2018-4191
epss 0.00704 https://api.first.org/data/v1/epss?cve=CVE-2018-4191
epss 0.00704 https://api.first.org/data/v1/epss?cve=CVE-2018-4191
epss 0.00704 https://api.first.org/data/v1/epss?cve=CVE-2018-4191
epss 0.00704 https://api.first.org/data/v1/epss?cve=CVE-2018-4191
epss 0.00704 https://api.first.org/data/v1/epss?cve=CVE-2018-4191
epss 0.00704 https://api.first.org/data/v1/epss?cve=CVE-2018-4191
epss 0.00704 https://api.first.org/data/v1/epss?cve=CVE-2018-4191
epss 0.00704 https://api.first.org/data/v1/epss?cve=CVE-2018-4191
epss 0.00704 https://api.first.org/data/v1/epss?cve=CVE-2018-4191
epss 0.00704 https://api.first.org/data/v1/epss?cve=CVE-2018-4191
cvssv2 6.8 https://nvd.nist.gov/vuln/detail/CVE-2018-4191
cvssv3 8.8 https://nvd.nist.gov/vuln/detail/CVE-2018-4191
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2018-4191
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4191
https://support.apple.com/kb/HT209109
https://support.apple.com/kb/HT209140
https://support.apple.com/kb/HT209141
cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*
CVE-2018-4191 https://nvd.nist.gov/vuln/detail/CVE-2018-4191
USN-3781-1 https://usn.ubuntu.com/3781-1/
No exploits are available.
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2018-4191
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2018-4191
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.71164
EPSS Score 0.00704
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:42:49.827721+00:00 Ubuntu USN Importer Import https://usn.ubuntu.com/3781-1/ 37.0.0