Staging Environment: Content and features may be unstable or change without notice.
Search for vulnerabilities
Vulnerability details: VCID-7ja2-v1zw-gbe1
Vulnerability ID VCID-7ja2-v1zw-gbe1
Aliases CVE-2018-4378
Summary A memory corruption issue was addressed with improved validation. This issue affected versions prior to iOS 12.1, tvOS 12.1, watchOS 5.1, Safari 12.0.1, iTunes 12.9.1, iCloud for Windows 7.8.
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 0.00666 https://api.first.org/data/v1/epss?cve=CVE-2018-4378
epss 0.00666 https://api.first.org/data/v1/epss?cve=CVE-2018-4378
epss 0.00666 https://api.first.org/data/v1/epss?cve=CVE-2018-4378
epss 0.00666 https://api.first.org/data/v1/epss?cve=CVE-2018-4378
epss 0.00666 https://api.first.org/data/v1/epss?cve=CVE-2018-4378
epss 0.00666 https://api.first.org/data/v1/epss?cve=CVE-2018-4378
epss 0.00666 https://api.first.org/data/v1/epss?cve=CVE-2018-4378
epss 0.00666 https://api.first.org/data/v1/epss?cve=CVE-2018-4378
epss 0.00666 https://api.first.org/data/v1/epss?cve=CVE-2018-4378
cvssv3 6.3 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 6.8 https://nvd.nist.gov/vuln/detail/CVE-2018-4378
cvssv3 8.8 https://nvd.nist.gov/vuln/detail/CVE-2018-4378
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2018-4378
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4378
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://support.apple.com/kb/HT209192
https://support.apple.com/kb/HT209194
https://support.apple.com/kb/HT209195
https://support.apple.com/kb/HT209196
https://support.apple.com/kb/HT209197
https://support.apple.com/kb/HT209198
cpe:2.3:a:apple:icloud:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apple:icloud:*:*:*:*:*:*:*:*
cpe:2.3:a:apple:itunes:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apple:itunes:*:*:*:*:*:*:*:*
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:*:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*
CVE-2018-4378 https://nvd.nist.gov/vuln/detail/CVE-2018-4378
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
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
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2018-4378
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-2018-4378
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 0.71196
EPSS Score 0.00666
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T16:33:19.173518+00:00 Debian Oval Importer Import https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.0.0