CVE-2020-16093 Security feature bypass in n/a

What is CVE-2020-16093?

CVE-2020-16093 is a high-severity vulnerability in Debian Debian Linux, published on 17 Jul 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In LemonLDAP::NG (aka lemonldap-ng) through 2.0.8, validity of the X.509 certificate is not checked by default when connecting to remote LDAP backends, because the default configuration of the Net::LDAPS module for Perl is used.

Weakness: CWE-295

Which versions are affected by CVE-2020-16093?

It affects 2 products.

Products include Debian Debian Linux, Lemonldap-Ng Lemonldap\.

How do I fix CVE-2020-16093?

Apply the vendor's patch.

Is CVE-2020-16093 being exploited?

There is no known exploitation of CVE-2020-16093 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-2020-16093, GHSA-9c48-27fx-7952, UBUNTU-CVE-2020-16093.