How severe is CVE-2020-24696?

CVE-2020-24696 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-24696 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-24696?

CVE-2020-24696 affects Powerdns Authoritative. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-24696?

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-2020-24696 published?

CVE-2020-24696 was published on 2020-10-02 and last updated on 2026-06-17.

CVE-2020-24696

CVE-2020-24696 is a high-severity vulnerability in Powerdns Authoritative with a CVSS 3.x base score of 8.1. 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-362.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 5.1
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-362
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 trigger a race condition leading to a crash, or possibly arbitrary code execution, by sending crafted queries with a GSS-TSIG signature.

Frequently asked questions

What is CVE-2020-24696?: 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.
How severe is CVE-2020-24696?: CVE-2020-24696 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-24696 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-24696?: CVE-2020-24696 affects Powerdns Authoritative. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-24696?: 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-2020-24696 published?: CVE-2020-24696 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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Other CWE-362 (Race Condition) vulnerabilities

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