Search for vulnerabilities
Vulnerability details: VCID-1rqc-x3bj-tuaf
Vulnerability ID VCID-1rqc-x3bj-tuaf
Aliases CVE-2020-9951
Summary A use after free issue was addressed with improved memory management. This issue is fixed in Safari 14.0. Processing maliciously crafted web content may lead to arbitrary code execution.
Status Published
Exploitability 0.5
Weighted Severity 7.9
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-416 Use After Free
System Score Found at
cvssv3 8.8 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-9951.json
epss 0.01145 https://api.first.org/data/v1/epss?cve=CVE-2020-9951
epss 0.01145 https://api.first.org/data/v1/epss?cve=CVE-2020-9951
epss 0.01145 https://api.first.org/data/v1/epss?cve=CVE-2020-9951
epss 0.01145 https://api.first.org/data/v1/epss?cve=CVE-2020-9951
epss 0.01145 https://api.first.org/data/v1/epss?cve=CVE-2020-9951
epss 0.01145 https://api.first.org/data/v1/epss?cve=CVE-2020-9951
epss 0.01145 https://api.first.org/data/v1/epss?cve=CVE-2020-9951
epss 0.01145 https://api.first.org/data/v1/epss?cve=CVE-2020-9951
epss 0.01145 https://api.first.org/data/v1/epss?cve=CVE-2020-9951
epss 0.01145 https://api.first.org/data/v1/epss?cve=CVE-2020-9951
epss 0.01145 https://api.first.org/data/v1/epss?cve=CVE-2020-9951
epss 0.01145 https://api.first.org/data/v1/epss?cve=CVE-2020-9951
epss 0.01145 https://api.first.org/data/v1/epss?cve=CVE-2020-9951
epss 0.01145 https://api.first.org/data/v1/epss?cve=CVE-2020-9951
cvssv3.1 8.8 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 6.8 https://nvd.nist.gov/vuln/detail/CVE-2020-9951
cvssv3.1 8.8 https://nvd.nist.gov/vuln/detail/CVE-2020-9951
archlinux Medium https://security.archlinux.org/AVG-1293
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-9951.json
https://api.first.org/data/v1/epss?cve=CVE-2020-9951
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-13543
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-13584
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-9947
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-9948
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-9951
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-9983
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1817
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1820
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1825
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1826
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30661
http://seclists.org/fulldisclosure/2020/Nov/18
http://seclists.org/fulldisclosure/2020/Nov/19
http://seclists.org/fulldisclosure/2020/Nov/20
http://seclists.org/fulldisclosure/2020/Nov/22
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://security.gentoo.org/glsa/202012-10
https://support.apple.com/HT211845
https://support.apple.com/kb/HT211843
https://support.apple.com/kb/HT211844
https://support.apple.com/kb/HT211850
https://support.apple.com/kb/HT211935
https://support.apple.com/kb/HT211952
https://www.debian.org/security/2020/dsa-4797
http://www.openwall.com/lists/oss-security/2020/11/23/3
1901216 https://bugzilla.redhat.com/show_bug.cgi?id=1901216
AVG-1293 https://security.archlinux.org/AVG-1293
cpe:2.3:a:apple:icloud:*:*:*:*:*:windows:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apple:icloud:*:*:*:*:*:windows:*:*
cpe:2.3:a:apple:itunes:*:*:*:*:*:windows:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:apple:itunes:*:*:*:*:*:windows:*:*
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:a:webkit:webkitgtk\+:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:webkit:webkitgtk\+:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
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:debian:debian_linux:10.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
CVE-2020-9951 https://nvd.nist.gov/vuln/detail/CVE-2020-9951
RHSA-2021:1586 https://access.redhat.com/errata/RHSA-2021:1586
RHSA-2025:10364 https://access.redhat.com/errata/RHSA-2025:10364
USN-4648-1 https://usn.ubuntu.com/4648-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-9951.json
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: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H 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-2020-9951
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:3.1/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-2020-9951
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 0.77578
EPSS Score 0.01145
Published At Aug. 6, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:39:58.757851+00:00 Ubuntu USN Importer Import https://usn.ubuntu.com/4648-1/ 37.0.0