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Vulnerability details: VCID-2hee-f8gq-rycf
Vulnerability ID VCID-2hee-f8gq-rycf
Aliases CVE-2019-3807
Summary An issue has been found in PowerDNS Recursor versions 4.1.x before 4.1.9 where records in the answer section of responses received from authoritative servers with the AA flag not set were not properly validated, allowing an attacker to bypass DNSSEC validation.
Status Published
Exploitability 0.5
Weighted Severity 8.8
Risk 4.4
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-345 Insufficient Verification of Data Authenticity
CWE-295 Improper Certificate Validation
System Score Found at
epss 3e-05 https://api.first.org/data/v1/epss?cve=CVE-2019-3807
epss 3e-05 https://api.first.org/data/v1/epss?cve=CVE-2019-3807
epss 3e-05 https://api.first.org/data/v1/epss?cve=CVE-2019-3807
epss 3e-05 https://api.first.org/data/v1/epss?cve=CVE-2019-3807
cvssv2 6.4 https://nvd.nist.gov/vuln/detail/CVE-2019-3807
cvssv3 3.7 https://nvd.nist.gov/vuln/detail/CVE-2019-3807
cvssv3 9.8 https://nvd.nist.gov/vuln/detail/CVE-2019-3807
archlinux Medium https://security.archlinux.org/AVG-856
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2019-3807
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3807
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3807
https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2019-02.html
ASA-201901-13 https://security.archlinux.org/ASA-201901-13
AVG-856 https://security.archlinux.org/AVG-856
cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:*
CVE-2019-3807 https://nvd.nist.gov/vuln/detail/CVE-2019-3807
No exploits are available.
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2019-3807
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:3.0/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2019-3807
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:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2019-3807
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 0.00116
EPSS Score 3e-05
Published At April 29, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T16:33:49.741973+00:00 Debian Oval Importer Import https://www.debian.org/security/oval/oval-definitions-bullseye.xml.bz2 38.0.0