CVE-2020-15719

libldap in certain third-party OpenLDAP packages has a certificate-validation flaw when the third-party package is asserting RFC6125 support. It considers CN even when there is a non-matching subjectAltName (SAN). This is fixed in, for example, openldap-2.4.46-10.el8 in Red Hat Enterprise Linux.

Published: 2020-07-14 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-15719 is rated Low Risk (32.3/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.22%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2020-15719

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-11-23 0.14% 0.22% +0.08%
2 2025-10-04 0.40% 0.14% -0.27%
3 2025-09-23 — 0.40% —

Full EPSS history (16 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-15719

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.2 3.1 MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 1.6 2.5 [email protected]
4.0 2.0 MEDIUM
AV:N/AC:H/Au:N/C:P/I:P/A:N Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:H)
Exploitation requires uncommon or highly specific conditions.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:N)
No availability impact.
 4.9 4.9 [email protected]

Weakness enumeration for CVE-2020-15719

OS Trackers for CVE-2020-15719

vendor priority summary link
alpine medium CVE-2020-15719: 1 source package rows (openldap); 10 state rows across 5 repos (3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 0, open 10. https://security.alpinelinux.org/vuln/CVE-2020-15719
debian unimportant CVE-2020-15719 unimportant priority: Debian including 1 source packages (openldap), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): open 5. https://security-tracker.debian.org/tracker/CVE-2020-15719
redhat low — https://access.redhat.com/security/cve/CVE-2020-15719
suse medium CVE-2020-15719 severity moderate: SUSE including 442 source package names (0.1.0:libldap-2_4-2-2.4.46-9.34.1, 0.1.0:libldap-data-2.4.46-9.34.1, …), 530 product×package rows across 110 product lines (Container bci/dotnet-aspnet, Container bci/dotnet-runtime, … (110 product lines)): Fixed 373, Known Affected 157. https://www.suse.com/security/cve/CVE-2020-15719/
ubuntu low CVE-2020-15719 low priority: Ubuntu including 1 source packages (openldap), 6 status rows across 6 suites (bionic, eoan, focal, trusty, upstream, xenial): not-affected 4, ignored 1, needs-triage 1. https://ubuntu.com/security/CVE-2020-15719

Affected software / configurations for CVE-2020-15719

Vendor Product Version Raw CPE
openldap openldap < 2.4.46-10.el8 cpe:2.3:a:openldap:openldap:*:*:*:*:*:*:*:*
redhat enterprise_linux 8.0 cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
opensuse leap 15.1 cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
opensuse leap 15.2 cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*
mcafee policy_auditor < 6.5.1 cpe:2.3:a:mcafee:policy_auditor:*:*:*:*:*:*:*:*
oracle blockchain_platform < 21.1.2 cpe:2.3:a:oracle:blockchain_platform:*:*:*:*:*:*:*:*

References for CVE-2020-15719

cvelogic Threat Intelligence