CVE-2016-7073 Security feature bypass in pdns

What is CVE-2016-7073?

CVE-2016-7073 is a medium-severity vulnerability in Debian Debian Linux, published on 11 Sep 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue has been found in PowerDNS before 3.4.11 and 4.0.2, and PowerDNS recursor before 4.0.4, allowing an attacker in position of man-in-the-middle to alter the content of an AXFR because of insufficient validation of TSIG signatures. A missing check of the TSIG time and fudge values was found in AXFRRetriever, leading to a possible replay attack.

Weakness: CWE-20

Which versions are affected by CVE-2016-7073?

It affects 3 products.

Products include Debian Debian Linux, Powerdns Authoritative, Powerdns Recursor.

How do I fix CVE-2016-7073?

Upgrade to a fixed version.

Is CVE-2016-7073 being exploited?

There is no known exploitation of CVE-2016-7073 in the wild and no public exploit code.

Other vulnerabilities in Debian Debian Linux

• CVE-2015-3306 ProFTPD Improper Access Control Exploited Critical 10.0
• CVE-2025-49113 RoundCube Webmail Deserialization of Untrusted Data Exploited Critical 9.9
• CVE-2026-24061 GNU InetUtils Argument Injection Exploited Critical 9.8
• CVE-2025-39682 Linux Kernel Improper Check for Unusual or Exceptional Conditions Exploited Critical 9.8
• CVE-2024-9680 Mozilla Firefox Use-After-Free Exploited Critical 9.8

All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2016-7073, GHSA-pm63-cw3m-c2g8, UBUNTU-CVE-2016-7073.