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Vulnerability details: VCID-jrsz-ynp7-wbb2
Vulnerability ID VCID-jrsz-ynp7-wbb2
Aliases CVE-2021-43527
Summary Multiple vulnerabilities have been discovered in NSS, the worst of which could result in arbitrary code execution.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
System Score Found at
cvssv3 9.8 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-43527.json
epss 0.05243 https://api.first.org/data/v1/epss?cve=CVE-2021-43527
epss 0.05243 https://api.first.org/data/v1/epss?cve=CVE-2021-43527
epss 0.05243 https://api.first.org/data/v1/epss?cve=CVE-2021-43527
epss 0.05243 https://api.first.org/data/v1/epss?cve=CVE-2021-43527
epss 0.05243 https://api.first.org/data/v1/epss?cve=CVE-2021-43527
epss 0.05243 https://api.first.org/data/v1/epss?cve=CVE-2021-43527
epss 0.05243 https://api.first.org/data/v1/epss?cve=CVE-2021-43527
epss 0.05243 https://api.first.org/data/v1/epss?cve=CVE-2021-43527
epss 0.05267 https://api.first.org/data/v1/epss?cve=CVE-2021-43527
epss 0.0538 https://api.first.org/data/v1/epss?cve=CVE-2021-43527
epss 0.0538 https://api.first.org/data/v1/epss?cve=CVE-2021-43527
epss 0.0538 https://api.first.org/data/v1/epss?cve=CVE-2021-43527
epss 0.0538 https://api.first.org/data/v1/epss?cve=CVE-2021-43527
epss 0.0538 https://api.first.org/data/v1/epss?cve=CVE-2021-43527
epss 0.0538 https://api.first.org/data/v1/epss?cve=CVE-2021-43527
cvssv3.1 8.8 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
archlinux High https://security.archlinux.org/AVG-2596
archlinux High https://security.archlinux.org/AVG-2597
generic_textual critical https://www.mozilla.org/en-US/security/advisories/mfsa2021-51
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-43527.json
https://api.first.org/data/v1/epss?cve=CVE-2021-43527
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-43527
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
2024370 https://bugzilla.redhat.com/show_bug.cgi?id=2024370
ASA-202112-3 https://security.archlinux.org/ASA-202112-3
ASA-202112-4 https://security.archlinux.org/ASA-202112-4
AVG-2596 https://security.archlinux.org/AVG-2596
AVG-2597 https://security.archlinux.org/AVG-2597
GLSA-202212-05 https://security.gentoo.org/glsa/202212-05
mfsa2021-51 https://www.mozilla.org/en-US/security/advisories/mfsa2021-51
RHSA-2021:4903 https://access.redhat.com/errata/RHSA-2021:4903
RHSA-2021:4904 https://access.redhat.com/errata/RHSA-2021:4904
RHSA-2021:4907 https://access.redhat.com/errata/RHSA-2021:4907
RHSA-2021:4909 https://access.redhat.com/errata/RHSA-2021:4909
RHSA-2021:4919 https://access.redhat.com/errata/RHSA-2021:4919
RHSA-2021:4932 https://access.redhat.com/errata/RHSA-2021:4932
RHSA-2021:4933 https://access.redhat.com/errata/RHSA-2021:4933
RHSA-2021:4946 https://access.redhat.com/errata/RHSA-2021:4946
RHSA-2021:4953 https://access.redhat.com/errata/RHSA-2021:4953
RHSA-2021:4954 https://access.redhat.com/errata/RHSA-2021:4954
RHSA-2021:4969 https://access.redhat.com/errata/RHSA-2021:4969
RHSA-2021:4994 https://access.redhat.com/errata/RHSA-2021:4994
RHSA-2021:5006 https://access.redhat.com/errata/RHSA-2021:5006
RHSA-2021:5035 https://access.redhat.com/errata/RHSA-2021:5035
USN-5168-1 https://usn.ubuntu.com/5168-1/
USN-5168-2 https://usn.ubuntu.com/5168-2/
USN-5168-3 https://usn.ubuntu.com/5168-3/
USN-5168-4 https://usn.ubuntu.com/5168-4/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-43527.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:L/UI:N/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
Exploit Prediction Scoring System (EPSS)
Percentile 0.89954
EPSS Score 0.05243
Published At April 7, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:10:22.239640+00:00 Gentoo Importer Import https://security.gentoo.org/glsa/202212-05 38.0.0