CVE-2020-8286

26

FAUCET Score

CVE-2020-8286 describes an improper certificate revocation check vulnerability in curl versions 7.41.0 through 7.73.0, stemming from insufficient verification of OCSP responses. This flaw affects a wide range of products including those from Apple, Debian, Oracle, and Splunk. With a CVSS score of 7.5 (HIGH), it represents a network-exploitable vulnerability with low attack complexity and a high potential impact on integrity, though it does not affect confidentiality or availability. Currently, there is no evidence of active exploitation, no known public exploit code (Metasploit, Nuclei, ExploitDB), and minimal community discussion or media coverage.

Impacted Technologies

Vendor	Product	Version(s)	CPE
		>= 7.41.0, < 7.74.0CPE matchmatch criteria	cpe:2.3:a:haxx:libcurl::::::::
		32CPE matchmatch criteria	cpe:2.3:o:fedoraproject:fedora:32:::::::*
		33CPE matchmatch criteria	cpe:2.3:o:fedoraproject:fedora:33:::::::*
		9.0CPE matchmatch criteria	cpe:2.3:o:debian:debian_linux:9.0:::::::*
		10.0CPE matchmatch criteria	cpe:2.3:o:debian:debian_linux:10.0:::::::*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

NONE

Exploitability Score

3.9

Impact Score

3.6

CvssVersion

3.1

Exploit Intelligence

EPSS Score

4.58%

Probability of exploitation in next 30 days

EPSS Percentile

90.6%

Percentile rank of EPSS score among Peer Group

As of 2026-07-24

Model: v2026.06.15

This CVE's current EPSS score of 0.0457 is in the 84th percentile among its peer group of 51,455 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (35)

hikvisionpatch availablevia llm_extracted

microsoftpatch availablevia msrc

Product: 19146-16820Fixed in: 7.68.0-3

microsoftpatch availablevia msrc

Product: cm1 curl 7.68.0-3 on CBL Mariner 1.0Fixed in: 7.68.0-3

oraclepatch availablevia nvd_reference

redhatpatch availablevia redhat_api

Product: JBoss Core Services for RHEL 8Fixed in: jbcs-httpd24-httpd-0:2.4.37-74.el8jbcs

redhatpatch availablevia redhat_api

Product: JBoss Core Services for RHEL 8Fixed in: jbcs-httpd24-apr-0:1.6.3-105.el8jbcs

redhatpatch availablevia redhat_api

Product: JBoss Core Services for RHEL 8Fixed in: jbcs-httpd24-apr-util-0:1.6.1-82.el8jbcs

redhatpatch availablevia redhat_api

Product: JBoss Core Services for RHEL 8Fixed in: jbcs-httpd24-brotli-0:1.0.6-40.el8jbcs

redhatpatch availablevia redhat_api

Product: JBoss Core Services for RHEL 8Fixed in: jbcs-httpd24-curl-0:7.77.0-2.el8jbcs

redhatpatch availablevia redhat_api

Product: JBoss Core Services for RHEL 8Fixed in: jbcs-httpd24-jansson-0:2.11-55.el8jbcs

redhatpatch availablevia redhat_api

Product: JBoss Core Services for RHEL 8Fixed in: jbcs-httpd24-mod_cluster-native-0:1.3.16-5.Final_redhat_2.el8jbcs

redhatpatch availablevia redhat_api

Product: JBoss Core Services for RHEL 8Fixed in: jbcs-httpd24-mod_http2-0:1.15.7-17.el8jbcs

redhatpatch availablevia redhat_api

Product: JBoss Core Services for RHEL 8Fixed in: jbcs-httpd24-mod_jk-0:1.2.48-16.redhat_1.el8jbcs

redhatpatch availablevia redhat_api

Product: JBoss Core Services for RHEL 8Fixed in: jbcs-httpd24-mod_md-1:2.0.8-36.el8jbcs

redhatpatch availablevia redhat_api

Product: JBoss Core Services for RHEL 8Fixed in: jbcs-httpd24-mod_security-0:2.9.2-63.GA.el8jbcs

redhatpatch availablevia redhat_api

Product: JBoss Core Services for RHEL 8Fixed in: jbcs-httpd24-nghttp2-0:1.39.2-37.el8jbcs

redhatpatch availablevia redhat_api

Product: JBoss Core Services for RHEL 8Fixed in: jbcs-httpd24-openssl-1:1.1.1g-6.el8jbcs

redhatpatch availablevia redhat_api

Product: JBoss Core Services for RHEL 8Fixed in: jbcs-httpd24-openssl-chil-0:1.0.0-5.el8jbcs

redhatpatch availablevia redhat_api

Product: JBoss Core Services for RHEL 8Fixed in: jbcs-httpd24-openssl-pkcs11-0:0.4.10-20.el8jbcs

redhatpatch availablevia redhat_api

Product: JBoss Core Services on RHEL 7Fixed in: jbcs-httpd24-0:1-18.jbcs.el7

redhatpatch availablevia redhat_api

Product: JBoss Core Services on RHEL 7Fixed in: jbcs-httpd24-apr-0:1.6.3-105.jbcs.el7

redhatpatch availablevia redhat_api

Product: JBoss Core Services on RHEL 7Fixed in: jbcs-httpd24-apr-util-0:1.6.1-82.jbcs.el7

redhatpatch availablevia redhat_api

Product: JBoss Core Services on RHEL 7Fixed in: jbcs-httpd24-curl-0:7.77.0-2.jbcs.el7

redhatpatch availablevia redhat_api

Product: JBoss Core Services on RHEL 7Fixed in: jbcs-httpd24-httpd-0:2.4.37-74.jbcs.el7

redhatpatch availablevia redhat_api

Product: JBoss Core Services on RHEL 7Fixed in: jbcs-httpd24-jansson-0:2.11-55.jbcs.el7

redhatpatch availablevia redhat_api

Product: JBoss Core Services on RHEL 7Fixed in: jbcs-httpd24-mod_cluster-native-0:1.3.16-5.Final_redhat_2.jbcs.el7

redhatpatch availablevia redhat_api

Product: JBoss Core Services on RHEL 7Fixed in: jbcs-httpd24-mod_http2-0:1.15.7-17.jbcs.el7

redhatpatch availablevia redhat_api

Product: JBoss Core Services on RHEL 7Fixed in: jbcs-httpd24-mod_jk-0:1.2.48-16.redhat_1.jbcs.el7

redhatpatch availablevia redhat_api

Product: JBoss Core Services on RHEL 7Fixed in: jbcs-httpd24-mod_md-1:2.0.8-36.jbcs.el7

redhatpatch availablevia redhat_api

Product: JBoss Core Services on RHEL 7Fixed in: jbcs-httpd24-mod_security-0:2.9.2-63.GA.jbcs.el7

redhatpatch availablevia redhat_api

Product: Red Hat Enterprise Linux 8Fixed in: curl-0:7.61.1-18.el8

redhatpatch availablevia redhat_api

Product: JBoss Core Services Apache HTTP Server 2.4.37 SP8Fixed in: jbcs-httpd24-curl

redhatpatch availablevia redhat_api

Product: JBoss Core Services for RHEL 8Fixed in: jbcs-httpd24-0:1-18.el8jbcs

zimbrapatch availablevia llm_extracted

Fixed in: 8.2.12, 9.0.6, 9.1.1

redhatend of lifevia redhat_api

Product: Red Hat Software CollectionsFixed in: httpd24-curl

Vendor Advisories (4)

zimbrallm-zimbra-9542faa91a6d6884HIGH

August Third Party Package Updates in Splunk Universal Forwarder

redhatCVE-2020-8286Moderate

curl: Inferior OCSP verification

hikvisionllm-hikvision-cd7d89e7182cf38aMEDIUM

Inferior OCSP verification

microsoft2020-Dec/CVE-2020-8286Important

curl 7.41.0 through 7.73.0 is vulnerable to an improper check for certificate revocation due to insufficient verification of the OCSP response.

References

cert-portal.siemens.com / productcert/pdf/ssa-200951.pdf

Third Party Advisory

cert-portal.siemens.com / productcert/pdf/ssa-389290.pdf

PatchThird Party Advisory

curl.se / docs/CVE-2020-8286.html

Vendor Advisory

seclists.org / fulldisclosure/2021/Apr/50

Mailing ListThird Party Advisory

seclists.org / fulldisclosure/2021/Apr/51

Mailing ListThird Party Advisory

seclists.org / fulldisclosure/2021/Apr/54

Mailing ListThird Party Advisory

hackerone.com / reports/1048457

ExploitPatchThird Party Advisory

lists.debian.org / debian-lts-announce/2020/12/msg00029.html

Mailing ListThird Party Advisory

lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/DAEHE2S2QLO4AO4MEEYL75NB7SAH5PSL

Mailing ListThird Party Advisory

lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/NZUVSQHN2ESHMJXNQ2Z7T2EELBB5HJXG

Mailing ListThird Party Advisory

security.gentoo.org / glsa/202012-14

Third Party Advisory

security.netapp.com / advisory/ntap-20210122-0007

Third Party Advisory

support.apple.com / kb/HT212325

Third Party Advisory

support.apple.com / kb/HT212326

Third Party Advisory

support.apple.com / kb/HT212327

Third Party Advisory

debian.org / security/2021/dsa-4881

Third Party Advisory

oracle.com / security-alerts/cpuApr2021.html

Third Party Advisory

oracle.com / security-alerts/cpuapr2022.html

PatchThird Party Advisory

oracle.com / /security-alerts/cpujul2021.html

Third Party Advisory