How severe is CVE-2026-33257?

CVE-2026-33257 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.

Is CVE-2026-33257 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-33257?

CVE-2026-33257 primarily affects Powerdns Authoritative. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2026-33257?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-33257 have an EU (EUVD) identifier?

Yes. CVE-2026-33257 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-24720.

When was CVE-2026-33257 published?

CVE-2026-33257 was published on 2026-04-22 and last updated on 2026-06-17.

CVE-2026-33257

CVE-2026-33257 is a medium-severity vulnerability in Powerdns Authoritative with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-770.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
EPSS exploit prediction: 1% (40th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-24720
Weakness: CWE-770
Affected product: Powerdns Authoritative
Published: 2026-04-22
Last modified: 2026-06-17

Description

An attacker can send a web request that causes unlimited memory allocation in the internal web server, leading to a denial of service. The internal web server is disabled by default.

Frequently asked questions

What is CVE-2026-33257?: An attacker can send a web request that causes unlimited memory allocation in the internal web server, leading to a denial of service. The internal web server is disabled by default.
How severe is CVE-2026-33257?: CVE-2026-33257 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability low.
Is CVE-2026-33257 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (40th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-33257?: CVE-2026-33257 primarily affects Powerdns Authoritative. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2026-33257?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-33257 have an EU (EUVD) identifier?: Yes. CVE-2026-33257 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-24720.
When was CVE-2026-33257 published?: CVE-2026-33257 was published on 2026-04-22 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:a:powerdns:authoritative:*:*:*:*:*:*:*:*
cpe:2.3:a:powerdns:dnsdist:*:*:*:*:*:*:*:*
cpe:2.3:a:powerdns:recursor:*:*:*:*:*:*:*:*
cpe:2.3:a:powerdns:recursor:5.4.0:*:*:*:*:*:*:*

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