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Vulnerability details: VCID-ap4u-dkwx-1kb3
Vulnerability ID VCID-ap4u-dkwx-1kb3
Aliases CVE-2021-22931
Summary Multiple vulnerabilities have been found in c-ares, the worst of which could result in the loss of confidentiality or integrity.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-20 Improper Input Validation
CWE-170 Improper Null Termination
System Score Found at
cvssv3 5.0 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-22931.json
epss 0.00662 https://api.first.org/data/v1/epss?cve=CVE-2021-22931
epss 0.00662 https://api.first.org/data/v1/epss?cve=CVE-2021-22931
epss 0.00662 https://api.first.org/data/v1/epss?cve=CVE-2021-22931
epss 0.00662 https://api.first.org/data/v1/epss?cve=CVE-2021-22931
epss 0.00662 https://api.first.org/data/v1/epss?cve=CVE-2021-22931
epss 0.00662 https://api.first.org/data/v1/epss?cve=CVE-2021-22931
epss 0.00662 https://api.first.org/data/v1/epss?cve=CVE-2021-22931
epss 0.00662 https://api.first.org/data/v1/epss?cve=CVE-2021-22931
epss 0.00662 https://api.first.org/data/v1/epss?cve=CVE-2021-22931
ssvc Track https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
cvssv3.1 8.8 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
ssvc Track https://hackerone.com/reports/1178337
ssvc Track https://nodejs.org/en/blog/vulnerability/aug-2021-security-releases/
archlinux High https://security.archlinux.org/AVG-2286
ssvc Track https://security.gentoo.org/glsa/202401-02
ssvc Track https://security.netapp.com/advisory/ntap-20210923-0001/
ssvc Track https://security.netapp.com/advisory/ntap-20211022-0003/
ssvc Track https://www.oracle.com/security-alerts/cpujan2022.html
ssvc Track https://www.oracle.com/security-alerts/cpujul2022.html
ssvc Track https://www.oracle.com/security-alerts/cpuoct2021.html
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-22931.json
https://api.first.org/data/v1/epss?cve=CVE-2021-22931
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
1178337 https://hackerone.com/reports/1178337
1993019 https://bugzilla.redhat.com/show_bug.cgi?id=1993019
aug-2021-security-releases https://nodejs.org/en/blog/vulnerability/aug-2021-security-releases/
AVG-2286 https://security.archlinux.org/AVG-2286
GLSA-202401-02 https://security.gentoo.org/glsa/202401-02
GLSA-202405-29 https://security.gentoo.org/glsa/202405-29
ntap-20210923-0001 https://security.netapp.com/advisory/ntap-20210923-0001/
ntap-20211022-0003 https://security.netapp.com/advisory/ntap-20211022-0003/
RHSA-2021:3280 https://access.redhat.com/errata/RHSA-2021:3280
RHSA-2021:3281 https://access.redhat.com/errata/RHSA-2021:3281
RHSA-2021:3623 https://access.redhat.com/errata/RHSA-2021:3623
RHSA-2021:3638 https://access.redhat.com/errata/RHSA-2021:3638
RHSA-2021:3639 https://access.redhat.com/errata/RHSA-2021:3639
RHSA-2021:3666 https://access.redhat.com/errata/RHSA-2021:3666
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-22931.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: SSVCv2/E:N/A:Y/T:T/P:M/B:A/M:M/D:T/2024-01-11T21:01:01Z/ Found at https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
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: SSVCv2/E:N/A:Y/T:T/P:M/B:A/M:M/D:T/2024-01-11T21:01:01Z/ Found at https://hackerone.com/reports/1178337
Vector: SSVCv2/E:N/A:Y/T:T/P:M/B:A/M:M/D:T/2024-01-11T21:01:01Z/ Found at https://nodejs.org/en/blog/vulnerability/aug-2021-security-releases/
Vector: SSVCv2/E:N/A:Y/T:T/P:M/B:A/M:M/D:T/2024-01-11T21:01:01Z/ Found at https://security.gentoo.org/glsa/202401-02
Vector: SSVCv2/E:N/A:Y/T:T/P:M/B:A/M:M/D:T/2024-01-11T21:01:01Z/ Found at https://security.netapp.com/advisory/ntap-20210923-0001/
Vector: SSVCv2/E:N/A:Y/T:T/P:M/B:A/M:M/D:T/2024-01-11T21:01:01Z/ Found at https://security.netapp.com/advisory/ntap-20211022-0003/
Vector: SSVCv2/E:N/A:Y/T:T/P:M/B:A/M:M/D:T/2024-01-11T21:01:01Z/ Found at https://www.oracle.com/security-alerts/cpujan2022.html
Vector: SSVCv2/E:N/A:Y/T:T/P:M/B:A/M:M/D:T/2024-01-11T21:01:01Z/ Found at https://www.oracle.com/security-alerts/cpujul2022.html
Vector: SSVCv2/E:N/A:Y/T:T/P:M/B:A/M:M/D:T/2024-01-11T21:01:01Z/ Found at https://www.oracle.com/security-alerts/cpuoct2021.html
Exploit Prediction Scoring System (EPSS)
Percentile 0.71095
EPSS Score 0.00662
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:00:47.028740+00:00 Gentoo Importer Import https://security.gentoo.org/glsa/202401-02 38.0.0