High severity · published Oct 2, 2020
CVE-2020-24696
An issue was discovered in PowerDNS Authoritative through 4.3.0 when --enable-experimental-gss-tsig is used
8.1
CVSS
1.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.4% · higher than 72% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AU
Authoritative · Powerdns
through 4.3.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-24696
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-24696
Vendor Advisory
https://doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2020-06.html
More from Authoritative
9.8
CVE-2026-33608
Incomplete domain name sanitization during
9.8
CVE-2020-24698
An issue was discovered in PowerDNS Authoritative through 4.3.0 when --enable-experimental-gss-tsig is used
8.6
CVE-2026-42000
Insufficient Validation of Names During AXFR
7.5
CVE-2026-42002
Concurrency and locking defects in GSS-TSIG
7.5
CVE-2026-42001
Insufficient Validation of Autoprimary SOA Queries