CVE-2019-25031 Code injection in n/a

What is CVE-2019-25031?

CVE-2019-25031 is a medium-severity code injection vulnerability in Debian Debian Linux, published on 27 Apr 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Unbound before 1.9.5 allows configuration injection in create_unbound_ad_servers.sh upon a successful man-in-the-middle attack against a cleartext HTTP session. NOTE: The vendor does not consider this a vulnerability of the Unbound software. create_unbound_ad_servers.sh is a contributed script from the community that facilitates automatic configuration creation. It is not part of the Unbound installation

Weakness: CWE-74

Which versions are affected by CVE-2019-25031?

It affects 2 products.

Products include Debian Debian Linux, Nlnetlabs Unbound.

How do I fix CVE-2019-25031?

Apply the vendor's patch.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2019-25031 being exploited?

There is no known exploitation of CVE-2019-25031 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-2019-25031, GHSA-9vvw-9wr3-56v3, UBUNTU-CVE-2019-25031.