CVE-2020-8286

Name: CVE-2020-8286
Creator: NVD / NIST
Published: 2020-12-14T20:15:14.043+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 4.58%

Last modified Jun 17, 2026

CVE-2020-8286 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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.. EPSS estimates a 4.58% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

4.58%

90.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Haxx	Libcurl	>= 7.41.0, < 7.74.0
Fedoraproject	Fedora	32
Fedoraproject	Fedora	33
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0
Netapp	Clustered Data Ontap	All versions
Netapp	Hci Management Node	All versions
Netapp	Solidfire	All versions
Netapp	Hci Bootstrap Os	All versions
Netapp	Hci Storage Node Firmware	All versions
Apple	Mac Os X	< 10.14.6
Apple	Mac Os X	>= 10.15, < 10.15.7
Apple	Mac Os X	10.14.6
Apple	Mac Os X	10.15.7
Apple	Macos	>= 11.0, < 11.3
Siemens	Simatic Tim 1531 Irc Firmware	<= 2.2
Siemens	Sinec Infrastructure Network Services	< 1.0.1.1
Oracle	Communications Billing And Revenue Management	12.0.0.3.0
Oracle	Communications Cloud Native Core Policy	1.14.0
Oracle	Essbase	21.2
Oracle	Peoplesoft Enterprise Peopletools	8.58
Splunk	Universal Forwarder	>= 8.2.0, < 8.2.12
Splunk	Universal Forwarder	>= 9.0.0, < 9.0.6
Splunk	Universal Forwarder	9.1.0

References

http://seclists.org/fulldisclosure/2021/Apr/50Mailing List, Third Party Advisory
http://seclists.org/fulldisclosure/2021/Apr/51Mailing List, Third Party Advisory
http://seclists.org/fulldisclosure/2021/Apr/54Mailing List, Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-200951.pdfThird Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdfPatch, Third Party Advisory
https://curl.se/docs/CVE-2020-8286.htmlVendor Advisory
https://hackerone.com/reports/1048457Exploit, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/12/msg00029.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DAEHE2S2QLO4AO4MEEYL75NB7SAH5PSL/Mailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NZUVSQHN2ESHMJXNQ2Z7T2EELBB5HJXG/Mailing List, Third Party Advisory
https://security.gentoo.org/glsa/202012-14Third Party Advisory
https://security.netapp.com/advisory/ntap-20210122-0007/Third Party Advisory
https://support.apple.com/kb/HT212325Third Party Advisory
https://support.apple.com/kb/HT212326Third Party Advisory
https://support.apple.com/kb/HT212327Third Party Advisory
https://www.debian.org/security/2021/dsa-4881Third Party Advisory
https://www.oracle.com//security-alerts/cpujul2021.htmlThird Party Advisory
https://www.oracle.com/security-alerts/cpuApr2021.htmlThird Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory
http://seclists.org/fulldisclosure/2021/Apr/50Mailing List, Third Party Advisory
http://seclists.org/fulldisclosure/2021/Apr/51Mailing List, Third Party Advisory
http://seclists.org/fulldisclosure/2021/Apr/54Mailing List, Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-200951.pdfThird Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdfPatch, Third Party Advisory
https://curl.se/docs/CVE-2020-8286.htmlVendor Advisory
https://hackerone.com/reports/1048457Exploit, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/12/msg00029.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DAEHE2S2QLO4AO4MEEYL75NB7SAH5PSL/Mailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NZUVSQHN2ESHMJXNQ2Z7T2EELBB5HJXG/Mailing List, Third Party Advisory
https://security.gentoo.org/glsa/202012-14Third Party Advisory
https://security.netapp.com/advisory/ntap-20210122-0007/Third Party Advisory
https://support.apple.com/kb/HT212325Third Party Advisory
https://support.apple.com/kb/HT212326Third Party Advisory
https://support.apple.com/kb/HT212327Third Party Advisory
https://www.debian.org/security/2021/dsa-4881Third Party Advisory
https://www.oracle.com//security-alerts/cpujul2021.htmlThird Party Advisory
https://www.oracle.com/security-alerts/cpuApr2021.htmlThird Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory

Timeline

Published: Dec 14, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-8286?

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.

How severe is CVE-2020-8286?

CVE-2020-8286 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 4.58% probability of exploitation in the next 30 days.

How do I fix CVE-2020-8286?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-8286?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST