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Vulnerability details: VCID-uy89-utzf-7fem
Vulnerability ID VCID-uy89-utzf-7fem
Aliases CVE-2021-30520
Summary multiple issues
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-416 Use After Free
System Score Found at
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2021-30520
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2021-30520
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2021-30520
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2021-30520
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2021-30520
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2021-30520
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2021-30520
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2021-30520
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2021-30520
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2021-30520
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2021-30520
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2021-30520
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2021-30520
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2021-30520
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2021-30520
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2021-30520
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2021-30520
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2021-30520
epss 0.00322 https://api.first.org/data/v1/epss?cve=CVE-2021-30520
cvssv2 6.8 https://nvd.nist.gov/vuln/detail/CVE-2021-30520
cvssv3.1 8.8 https://nvd.nist.gov/vuln/detail/CVE-2021-30520
archlinux High https://security.archlinux.org/AVG-1936
archlinux High https://security.archlinux.org/AVG-1937
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2021-30520
https://chromereleases.googleblog.com/2021/05/stable-channel-update-for-desktop.html
https://crbug.com/1193362
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30506
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30507
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30508
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30509
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30510
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30511
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30512
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30513
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30514
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30515
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30516
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30517
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30518
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30519
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30520
ASA-202105-7 https://security.archlinux.org/ASA-202105-7
ASA-202105-8 https://security.archlinux.org/ASA-202105-8
AVG-1936 https://security.archlinux.org/AVG-1936
AVG-1937 https://security.archlinux.org/AVG-1937
cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
CVE-2021-30520 https://nvd.nist.gov/vuln/detail/CVE-2021-30520
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-2021-30520
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-2021-30520
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 0.54618
EPSS Score 0.00322
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T11:36:30.782173+00:00 Arch Linux Importer Import https://security.archlinux.org/AVG-1937 37.0.0