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No exploitation reportedFix available

CVE-2020-8286

No exploitation reported by the sources we read.

  • Published2020-12-14
  • Fixed in10.15.7 · 10.14.6
  • WeaknessCWE-295

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2020-12-1420:15CVE publishedNVD

Versions per branch

NVD
Apple mac os x
BranchAffectedFixed in
10.15≥ 10.15, < 10.15.710.15.7
10.14< 10.14.610.14.6
10.14= 10.14.6no fix published
10.15= 10.15.7no fix published
Splunk universal forwarder
BranchAffectedFixed in
9.0≥ 9.0.0, < 9.0.69.0.6
8.2≥ 8.2.0, < 8.2.128.2.12
9.1= 9.1.0no fix published
Debian debian linux
BranchAffectedFixed in
9.0= 9.0no fix published
10.0= 10.0no fix published

14 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As hackerone, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • https://github.com/curl/curl
    Affected
    • = 7.41.0 to and including 7.73.0no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2022-04-19

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • curlUbuntu:20.04:LTSall versions · fixed in 7.68.0-1ubuntu2.4
  • curlUbuntu:18.04:LTSall versions · fixed in 7.58.0-2ubuntu3.12
  • curlUbuntu:16.04:LTSall versions · fixed in 7.47.0-1ubuntu2.18
  • curlSUSE:OpenStack Cloud Crowbar 9all versions · fixed in 7.60.0-4.20.1
  • curlSUSE:OpenStack Cloud 9all versions · fixed in 7.60.0-4.20.1
  • curlSUSE:Linux Enterprise Software Development Kit 12 SP5all versions · fixed in 7.60.0-11.9.1
  • curlSUSE:Linux Enterprise Server for SAP Applications 12 SP5all versions · fixed in 7.60.0-11.9.1
  • curlSUSE:Linux Enterprise Server for SAP Applications 12 SP4all versions · fixed in 7.60.0-4.20.1

63 more package ranges on OSV.dev

Vendor advisories

  • CVE-2020-8286 Red Hat Product Security189 products fixed · 6 known affected

    curl: Inferior OCSP verification

    curl.src as a component of Red Hat Ceph Storage 2 · libcurl as a component of Red Hat Ceph Storage 2 · httpd24-curl as a component of Red Hat Software Collections · +3 more

  • ICSA-23-348-10 CISA5 known affected

    Siemens SIMATIC S7-1500

    SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) · SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) · SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) · +2 more

  • SSA-398330 Siemens ProductCERT5 known affected

    SSA-398330: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP >= V3.1.0 and < V3.1.5

    SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) >= V3.1.0 < V3.1.5 · SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) >= V3.1.0 < V3.1.5 · SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) >= V3.1.0 < V3.1.5 · +2 more

  • ICSA-22-069-09 CISA1 known affected

    Siemens SINEC INS

    SINEC INS

  • SSA-389290 Siemens ProductCERT1 known affected

    SSA-389290: Third-Party Component Vulnerabilities in SINEC INS

    SINEC INS

  • RHSA-2021:2472 Red Hat Product Security143 products fixed

    Red Hat Security Advisory: Red Hat JBoss Core Services Apache HTTP Server 2.4.37 SP8 security update

4 more advisories

Full record on NVD

Fix

  1. Update Apple mac os x to 10.15.7 · 10.14.6
  2. Vendor fix Siemens ProductCERT SSA-398330 · 1 productUpdate to V3.1.5 or later version
  3. Vendor fix CISA ICSA-23-348-10 · 5 productsUpdate to V3.1.5 or later version
  4. Vendor fix CISA ICSA-22-069-09 · 1 productUpdate to V1.0.1.1 or later version
  5. Vendor fix Siemens ProductCERT SSA-389290 · 1 productUpdate to V1.0.1.1 or later version
  6. Vendor fix Red Hat Product Security RHSA-2021:2472 · 143 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 After installing the updated packages, the httpd daemon will be restarted automatically. Applications using the APR libraries, such as httpd, must be …
  7. Vendor fix Red Hat Product Security RHSA-2021:2471 · 1 productBefore applying the update, back up your existing installation, including all applications, configuration files, databases and database settings, and so on. The References section of this erratum contains a download link for the update. You must be logged in to download the update.

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • CISA-ADPSSVC decisionnone2024-11-15
  • NVDCVSS 3.17.5read 2026-10-23
  • NVDCVSS 2.05read 2026-10-23
  • CNAweakness (CWE)CWE-295known since 2026-10-23
  • NVDweakness (CWE)CWE-295read 2026-10-23
  • FIRST EPSSEPSS score4.6 %2026-11-09
  • OSVaffected packages—
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Published
2020-12-14
Last Modified
2026-10-14
NVD status
Modified
GitHub Advisory
GHSA-xh5x-q49r-r9w4

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.

Is CVE-2020-8286 actively exploited?

Active exploitation of CVE-2020-8286 has not been confirmed. Its EPSS score was 4.6% on 2026-11-09, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-8286?

CVE-2020-8286 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

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