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CVE-2026-52688

RRSIGs with too few labels can lead to bypass of DNSSEC wildcard validation

High7.5EPSS 0.18%
Published
Updated
Reserved
Assigned by
OX

Description

RRSIGs with too few labels can lead to bypass of DNSSEC wildcard validation

Scores

CVSS scores of CVE-2026-52688, by who scored it
Scored byCVSSScoreVector
OXCNA (assigner)3.1High7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
NVDNVD · Awaiting Analysis3.1High7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS (exploitation in 30 days)
0.18% · top 93% of all CVEs (4 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: yes · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.

Weakness

Affected products

  • PowerDNS · Recursor

    • affected 5.2.0 – < 5.2.12
    • affected 5.3.0 – < 5.3.9
    • affected 5.4.0 – < 5.4.4

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .