How severe is CVE-2020-24697?

CVE-2020-24697 has a CVSS 3.x base score of 7.5, rated high 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 high.

Is CVE-2020-24697 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-24697?

CVE-2020-24697 affects Powerdns Authoritative. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-24697?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-24697 published?

CVE-2020-24697 was published on 2020-10-02 and last updated on 2026-06-17.

CVE-2020-24697

CVE-2020-24697 is a high-severity vulnerability in Powerdns Authoritative with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 4.3
EPSS exploit prediction: 4% (90th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Powerdns Authoritative
Published: 2020-10-02
Last modified: 2026-06-17

Description

An issue was discovered in PowerDNS Authoritative through 4.3.0 when --enable-experimental-gss-tsig is used. A remote, unauthenticated attacker can cause a denial of service by sending crafted queries with a GSS-TSIG signature.

Frequently asked questions

What is CVE-2020-24697?: An issue was discovered in PowerDNS Authoritative through 4.3.0 when --enable-experimental-gss-tsig is used. A remote, unauthenticated attacker can cause a denial of service by sending crafted queries with a GSS-TSIG signature.
How severe is CVE-2020-24697?: CVE-2020-24697 has a CVSS 3.x base score of 7.5, rated high 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 high.
Is CVE-2020-24697 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-24697?: CVE-2020-24697 affects Powerdns Authoritative. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-24697?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-24697 published?: CVE-2020-24697 was published on 2020-10-02 and last updated on 2026-06-17.

References

https://doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2020-06.html

Affected products (1)

cpe:2.3:a:powerdns:authoritative:*:*:*:*:*:*:*:*

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