CVE-2020-16093

In LemonLDAP::NG (aka lemonldap-ng) through 2.0.8, validity of the X.509 certificate is not...

7.5 HighFix available

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: High
Availability: None

Exploit likelihood

0.78%Down 0.1 points since Jul 18, 2022

What each source reports

NVD Score used 7.5

Record: CVE-2020-16093
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness: CWE-295
Updated: 2026-11-02

CVE List No score

Record: CVE-2020-16093
Updated: 2026-11-02

EUVDEUVD-2020-8060 No score

Record: EUVD-2020-8060
Updated: 2026-11-03

GitHub AdvisoriesGHSA-9c48-27fx-7952 7.5

In LemonLDAP::NG (aka lemonldap-ng) through 2.0.8, validity of the X.509 certificate is not...

Record: GHSA-9c48-27fx-7952
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness: CWE-295
Updated: 2026-11-02

OSV 7.5

Record: CVE-2020-16093
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Updated: 2026-11-02

OSVDEBIAN-CVE-2020-16093 7.5

Record: DEBIAN-CVE-2020-16093
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Updated: 2026-11-02

OSVUBUNTU-CVE-2020-16093 7.5

Record: UBUNTU-CVE-2020-16093
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`lemonldap-ng` Debian:12	before 2.0.9+ds-1	2.0.9+ds-1
`lemonldap-ng` Debian:13	before 2.0.9+ds-1	2.0.9+ds-1
`lemonldap-ng` Debian:14	before 2.0.9+ds-1	2.0.9+ds-1
`lemonldap-ng` Debian:10 From an advisory covering 2 CVEs	before 2.0.2+ds-7+deb10u8, plus listed versions 2.0.2+ds-7+deb10u12.0.2+ds-7+deb10u22.0.2+ds-7+deb10u32.0.2+ds-7+deb10u42.0.2+ds-7+deb10u52.0.2+ds-7+deb10u62.0.2+ds-7+deb10u7	2.0.2+ds-7+deb10u8
`lemonldap-ng` Ubuntu:16.04:LTS	All versions, plus listed versions 1.3.3-11.4.6-11.4.6-21.4.6-3	None known
`lemonldap-ng` Ubuntu:18.04:LTS	All versions, plus listed versions 1.9.10-11.9.13-21.9.14-11.9.15-11.9.16-2	None known
`lemonldap-ng` Ubuntu:20.04:LTS	All versions, plus listed versions 2.0.5+ds-22.0.6+ds-22.0.7+ds-2	None known

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-16093 is a high vulnerability (CVSS 7.5) in Debian Linux, published July 17, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.78%, the 56th percentile. Fixed in lemonldap-ng 2.0.9+ds-1.