CVE-2020-24697

Name: CVE-2020-24697
Creator: NVD / NIST
Published: 2020-10-02T09:15:13.697+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 4.36%

Last modified Jun 17, 2026

CVE-2020-24697 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 4.36% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability

4.36%

90.0th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Powerdns	Authoritative	<= 4.3.0

References

Timeline

Published: Oct 2, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-24697?

How severe is CVE-2020-24697?

CVE-2020-24697 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 4.36% probability of exploitation in the next 30 days.

How do I fix CVE-2020-24697?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-24697?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST