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CVE-2020-15719

16
FAUCET Score

CVE-2020-15719 describes a certificate validation flaw in libldap within specific third-party OpenLDAP packages, affecting products like McAfee, OpenLDAP, OpenSUSE, Oracle, and Red Hat. The vulnerability allows the software to incorrectly validate certificates by prioritizing the Common Name (CN) over a non-matching Subject Alternative Name (SAN) when RFC6125 support is asserted. Rated with a CVSS score of 4.2 (MEDIUM), this vulnerability requires user interaction and high attack complexity, potentially leading to limited confidentiality and integrity impacts. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.4.46-10.el8CPE matchmatch criteria
cpe:2.3:a:openldap:openldap:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
15.1CPE matchmatch criteria
cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
15.2CPE matchmatch criteria
cpe:2.3:o:opensuse:leap:15.2:*:*:*:*:*:*:*
< 6.5.1CPE matchmatch criteria
cpe:2.3:a:mcafee:policy_auditor:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.2MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
1.6
Impact Score
2.5
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.51%
Probability of exploitation in next 30 days
EPSS Percentile
83.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0251 is in the 89th percentile among its peer group of 707 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.2 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

mediatekpatch availablevia llm_extracted
Fixed in: 9.3.1, 9.2.3, 9.1.6
oraclepatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: openldap-0:2.4.46-10.el8
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: compat-openldap
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: openldap

Vendor Advisories (2)

mediatekllm-mediatek-5bd731d14163992dHIGH

Third-Party Package Updates in Splunk Enterprise - October 2024

Oct 14, 2024
redhatCVE-2020-15719Low

openldap: Certificate validation incorrectly matches name against CN-ID

Aug 19, 2019

References

lists.opensuse.org / opensuse-security-announce/2020-09/msg00033.html
Mailing ListThird Party Advisory
lists.opensuse.org / opensuse-security-announce/2020-09/msg00059.html
Mailing ListThird Party Advisory
access.redhat.com / errata/RHBA-2019:3674
Third Party Advisory
bugs.openldap.org / show_bug.cgi
Permissions RequiredVendor Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingThird Party Advisory
kc.mcafee.com / corporate/index
Third Party Advisory
oracle.com / security-alerts/cpuapr2022.html
PatchThird Party Advisory