CVE-2020-24696

Name: CVE-2020-24696
Creator: NVD / NIST
Published: 2020-10-02T09:15:13.633+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.1/10EPSS 1.31%

Last modified Jun 17, 2026

CVE-2020-24696 is a high-severity vulnerability rated 8.1/10 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 trigger a race condition leading to a crash, or possibly arbitrary code execution, by sending crafted queries with a GSS-TSIG signature.. EPSS estimates a 1.31% 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 trigger a race condition leading to a crash, or possibly arbitrary code execution, by sending crafted queries with a GSS-TSIG signature.

Metrics

CVSS 3.1

8.1/10

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

EPSS Probability

1.31%

66.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-362

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-2020-24696?

How severe is CVE-2020-24696?

CVE-2020-24696 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 1.31% probability of exploitation in the next 30 days.

How do I fix CVE-2020-24696?

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-2020-24696?

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

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Source: NVD / NIST