System	Score	Found at
epss	0.06967	https://api.first.org/data/v1/epss?cve=CVE-2018-4199
epss	0.06967	https://api.first.org/data/v1/epss?cve=CVE-2018-4199
epss	0.06967	https://api.first.org/data/v1/epss?cve=CVE-2018-4199
epss	0.06967	https://api.first.org/data/v1/epss?cve=CVE-2018-4199
epss	0.06967	https://api.first.org/data/v1/epss?cve=CVE-2018-4199
epss	0.06967	https://api.first.org/data/v1/epss?cve=CVE-2018-4199
epss	0.06967	https://api.first.org/data/v1/epss?cve=CVE-2018-4199
epss	0.06967	https://api.first.org/data/v1/epss?cve=CVE-2018-4199
epss	0.06967	https://api.first.org/data/v1/epss?cve=CVE-2018-4199
cvssv2	6.8	https://nvd.nist.gov/vuln/detail/CVE-2018-4199
cvssv3	8.8	https://nvd.nist.gov/vuln/detail/CVE-2018-4199

Reference id	Reference type	URL
		https://api.first.org/data/v1/epss?cve=CVE-2018-4199
		https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4199
		https://support.apple.com/HT208848
		https://support.apple.com/HT208850
		https://support.apple.com/HT208852
		https://support.apple.com/HT208853
		https://support.apple.com/HT208854
		http://www.securitytracker.com/id/1041029
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:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*		https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*		https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*		https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
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-2018-4199		https://nvd.nist.gov/vuln/detail/CVE-2018-4199
GLSA-201808-04		https://security.gentoo.org/glsa/201808-04
USN-3687-1		https://usn.ubuntu.com/3687-1/

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-2018-4199

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-2018-4199

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

Percentile	0.91399
EPSS Score	0.06967
Published At	April 1, 2026, 12:55 p.m.

Date	Actor	Action	Source	VulnerableCode Version
2026-04-01T13:12:31.389978+00:00	Gentoo Importer	Import	https://security.gentoo.org/glsa/201808-04	38.0.0