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Vulnerability details: VCID-vshb-4mjd-qugr
Vulnerability ID VCID-vshb-4mjd-qugr
Aliases CVE-2021-3448
Summary Use of insufficient randomness in Dnsmasq might lead to DNS Cache Poisoning.
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-358 Improperly Implemented Security Check for Standard
System Score Found at
cvssv3 4.0 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-3448.json
epss 0.00042 https://api.first.org/data/v1/epss?cve=CVE-2021-3448
epss 0.00042 https://api.first.org/data/v1/epss?cve=CVE-2021-3448
epss 0.00042 https://api.first.org/data/v1/epss?cve=CVE-2021-3448
epss 0.00042 https://api.first.org/data/v1/epss?cve=CVE-2021-3448
epss 0.00042 https://api.first.org/data/v1/epss?cve=CVE-2021-3448
epss 0.00042 https://api.first.org/data/v1/epss?cve=CVE-2021-3448
epss 0.00042 https://api.first.org/data/v1/epss?cve=CVE-2021-3448
epss 0.00042 https://api.first.org/data/v1/epss?cve=CVE-2021-3448
epss 0.00042 https://api.first.org/data/v1/epss?cve=CVE-2021-3448
cvssv3.1 4 https://bugzilla.redhat.com/show_bug.cgi?id=1939368
ssvc Track https://bugzilla.redhat.com/show_bug.cgi?id=1939368
cvssv3.1 4 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1 4 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CVTJUOFFFHINLKWAOC2ZSC5MOPD4SJ24/
ssvc Track https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CVTJUOFFFHINLKWAOC2ZSC5MOPD4SJ24/
cvssv3.1 4 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FHG7GWSQWKF7JXIMLOGJBKZWBB4VIAJ7/
ssvc Track https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FHG7GWSQWKF7JXIMLOGJBKZWBB4VIAJ7/
cvssv3.1 4 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GHURNEHHUBSW45KMIZ4FNBCSUPWPGV5V/
ssvc Track https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GHURNEHHUBSW45KMIZ4FNBCSUPWPGV5V/
archlinux Medium https://security.archlinux.org/AVG-1703
cvssv3.1 4 https://security.gentoo.org/glsa/202105-20
ssvc Track https://security.gentoo.org/glsa/202105-20
cvssv3.1 4 https://www.oracle.com/security-alerts/cpujan2022.html
ssvc Track https://www.oracle.com/security-alerts/cpujan2022.html
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-3448.json
https://api.first.org/data/v1/epss?cve=CVE-2021-3448
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3448
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
1939368 https://bugzilla.redhat.com/show_bug.cgi?id=1939368
AVG-1703 https://security.archlinux.org/AVG-1703
CVTJUOFFFHINLKWAOC2ZSC5MOPD4SJ24 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CVTJUOFFFHINLKWAOC2ZSC5MOPD4SJ24/
FHG7GWSQWKF7JXIMLOGJBKZWBB4VIAJ7 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FHG7GWSQWKF7JXIMLOGJBKZWBB4VIAJ7/
GHURNEHHUBSW45KMIZ4FNBCSUPWPGV5V https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GHURNEHHUBSW45KMIZ4FNBCSUPWPGV5V/
GLSA-202105-20 https://security.gentoo.org/glsa/202105-20
RHSA-2021:4153 https://access.redhat.com/errata/RHSA-2021:4153
USN-4976-1 https://usn.ubuntu.com/4976-1/
USN-4976-2 https://usn.ubuntu.com/4976-2/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2021-3448.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

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Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N Found at https://bugzilla.redhat.com/show_bug.cgi?id=1939368
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

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-12-03T00:40:29Z/ Found at https://bugzilla.redhat.com/show_bug.cgi?id=1939368
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N 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

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Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N Found at https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CVTJUOFFFHINLKWAOC2ZSC5MOPD4SJ24/
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

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none

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required

unchanged

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-12-03T00:40:29Z/ Found at https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CVTJUOFFFHINLKWAOC2ZSC5MOPD4SJ24/
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N Found at https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FHG7GWSQWKF7JXIMLOGJBKZWBB4VIAJ7/
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

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required

unchanged

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-12-03T00:40:29Z/ Found at https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FHG7GWSQWKF7JXIMLOGJBKZWBB4VIAJ7/
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N Found at https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GHURNEHHUBSW45KMIZ4FNBCSUPWPGV5V/
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

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-12-03T00:40:29Z/ Found at https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GHURNEHHUBSW45KMIZ4FNBCSUPWPGV5V/
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N Found at https://security.gentoo.org/glsa/202105-20
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

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Vector: SSVCv2/E:N/A:N/T:P/P:M/B:A/M:M/D:T/2025-12-03T00:40:29Z/ Found at https://security.gentoo.org/glsa/202105-20
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N Found at https://www.oracle.com/security-alerts/cpujan2022.html
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:N/T:P/P:M/B:A/M:M/D:T/2025-12-03T00:40:29Z/ Found at https://www.oracle.com/security-alerts/cpujan2022.html
Exploit Prediction Scoring System (EPSS)
Percentile 0.12634
EPSS Score 0.00042
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T13:11:53.836216+00:00 Gentoo Importer Import https://security.gentoo.org/glsa/202105-20 38.0.0