CVE-2022-27227

In PowerDNS Authoritative Server before 4.4.3, 4.5.x before 4.5.4, and 4.6.x before 4.6.1 and PowerDNS Recursor before 4.4.8, 4.5.x before 4.5.8, and 4.6.x before 4.6.1, insufficient validation of an IXFR end condition causes incomplete zone transfers to be handled as successful transfers.

Published: 2022-03-25 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-27227 is rated Low Risk (35.4/100): CVSS High severity, with low exploitation likelihood (EPSS 0.05%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2022-27227

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-02-22 0.06% 0.05% -0.01%
2 2025-05-08 0.01% 0.06% +0.04%
3 2025-03-17 — 0.01% —

Full EPSS history (12 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-27227

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]
4.3 2.0 MEDIUM
AV:N/AC:M/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 2.9 [email protected]

Weakness enumeration for CVE-2022-27227

OS Trackers for CVE-2022-27227

vendor priority summary link
alpine high CVE-2022-27227: 2 source package rows (pdns, pdns-recursor); 14 state rows across 7 repos (3.17-community, 3.18-community, 3.19-community, 3.20-community, 3.21-community, 3.22-community, edge-community); fixed 14, open 0. https://security.alpinelinux.org/vuln/CVE-2022-27227
debian end-of-life CVE-2022-27227 end-of-life priority: Debian including 2 source packages (pdns, pdns-recursor), 10 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 8, open 2. https://security-tracker.debian.org/tracker/CVE-2022-27227
suse high CVE-2022-27227 severity important: SUSE including 23 source package names (pdns, pdns-4.3.1-bp153.2.3.1, …), 37 product×package rows across 6 product lines (HPE Helion OpenStack 8, SUSE OpenStack Cloud 8, … (6 product lines)): Fixed 31, Known Not Affected 6. https://www.suse.com/security/cve/CVE-2022-27227/
ubuntu medium CVE-2022-27227 medium priority: Ubuntu including 2 source packages (pdns, pdns-recursor), 28 status rows across 14 suites (bionic, focal, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): not-affected 12, ignored 8, released 8. https://ubuntu.com/security/CVE-2022-27227

Affected software / configurations for CVE-2022-27227

Vendor Product Version Raw CPE
powerdns authoritative_server < 4.4.3 cpe:2.3:a:powerdns:authoritative_server:*:*:*:*:*:*:*:*
powerdns authoritative_server >= 4.5.0, < 4.5.4 cpe:2.3:a:powerdns:authoritative_server:*:*:*:*:*:*:*:*
powerdns authoritative_server >= 4.6.0, < 4.6.1 cpe:2.3:a:powerdns:authoritative_server:*:*:*:*:*:*:*:*
powerdns recursor < 4.4.8 cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:*
powerdns recursor >= 4.5.0, < 4.5.8 cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:*
powerdns recursor >= 4.6.0, < 4.6.1 cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:*
fedoraproject fedora 34 cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
fedoraproject fedora 35 cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
fedoraproject fedora 36 cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*

References for CVE-2022-27227

URL Tags
http://www.openwall.com/lists/oss-security/2022/03/25/1 Mailing List Patch Third Party Advisory
https://doc.powerdns.com/authoritative/security-advisories/index.html Vendor Advisory
https://doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2022-01.html Vendor Advisory
https://docs.powerdns.com/recursor/security-advisories/index.html Vendor Advisory
https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2022-01.html Vendor Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2QKN56VWXUVFOYGUN75N5IRNK66OHTHT/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HEABZA46XYEUWMGSY2GYYVHISBVWEHIO/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IPHOFNI7FKM5NNOVDOWO4TBXFAFICCUE/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZJSKICB67SPPEGNXCQLZVSWR6QGCN3KP/
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