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Vulnerability details: VCID-r8q9-u747-zkgd
Vulnerability ID VCID-r8q9-u747-zkgd
Aliases CVE-2020-13543
Summary A code execution vulnerability exists in the WebSocket functionality of Webkit WebKitGTK 2.30.0. A specially crafted web page can trigger a use-after-free vulnerability which can lead to remote code execution. An attacker can get a user to visit a webpage to trigger this vulnerability.
Status Published
Exploitability 0.5
Weighted Severity 7.9
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (2)
System Score Found at
cvssv3 8.8 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-13543.json
epss 0.00758 https://api.first.org/data/v1/epss?cve=CVE-2020-13543
epss 0.00758 https://api.first.org/data/v1/epss?cve=CVE-2020-13543
epss 0.00758 https://api.first.org/data/v1/epss?cve=CVE-2020-13543
epss 0.00758 https://api.first.org/data/v1/epss?cve=CVE-2020-13543
epss 0.00758 https://api.first.org/data/v1/epss?cve=CVE-2020-13543
epss 0.00758 https://api.first.org/data/v1/epss?cve=CVE-2020-13543
epss 0.00758 https://api.first.org/data/v1/epss?cve=CVE-2020-13543
epss 0.00758 https://api.first.org/data/v1/epss?cve=CVE-2020-13543
epss 0.00758 https://api.first.org/data/v1/epss?cve=CVE-2020-13543
epss 0.00758 https://api.first.org/data/v1/epss?cve=CVE-2020-13543
epss 0.00758 https://api.first.org/data/v1/epss?cve=CVE-2020-13543
epss 0.00758 https://api.first.org/data/v1/epss?cve=CVE-2020-13543
epss 0.00758 https://api.first.org/data/v1/epss?cve=CVE-2020-13543
epss 0.00758 https://api.first.org/data/v1/epss?cve=CVE-2020-13543
epss 0.00758 https://api.first.org/data/v1/epss?cve=CVE-2020-13543
epss 0.00758 https://api.first.org/data/v1/epss?cve=CVE-2020-13543
epss 0.00758 https://api.first.org/data/v1/epss?cve=CVE-2020-13543
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-2020-13543
cvssv3.1 8.8 https://nvd.nist.gov/vuln/detail/CVE-2020-13543
archlinux Medium https://security.archlinux.org/AVG-1291
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2020-13543.json
https://api.first.org/data/v1/epss?cve=CVE-2020-13543
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
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://security.gentoo.org/glsa/202012-10
https://talosintelligence.com/vulnerability_reports/TALOS-2020-1155
https://www.oracle.com/security-alerts/cpuapr2022.html
1903568 https://bugzilla.redhat.com/show_bug.cgi?id=1903568
ASA-202011-28 https://security.archlinux.org/ASA-202011-28
AVG-1291 https://security.archlinux.org/AVG-1291
cpe:2.3:a:webkitgtk:webkitgtk:2.30.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:webkitgtk:webkitgtk:2.30.0:*:*:*:*:*:*:*
CVE-2020-13543 https://nvd.nist.gov/vuln/detail/CVE-2020-13543
RHSA-2021:1586 https://access.redhat.com/errata/RHSA-2021:1586
RHSA-2025:10364 https://access.redhat.com/errata/RHSA-2025:10364
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-2020-13543.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-2020-13543
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-2020-13543
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 0.72321
EPSS Score 0.00758
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:41:19.736087+00:00 Alpine Linux Importer Import https://secdb.alpinelinux.org/v3.14/community.json 37.0.0