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Full vulnerability report · 2020
CVE-2020-8286High confidence

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

Unknown · https://github.com/curl/curl

Official source article: Siemens SSA-398330 ↗. Check the applicable product and release in the original source.

7.5HighCVSS 3.1
Recommended action
Patch only the product branches with a verified fix

High technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance. Verified remediation exists for at least one product or source, but 7 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityHighOperational priority:Critical, raised one band.upgradedsince 14 Oct 2026

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • A structured source references public exploit or proof-of-concept material.
  • The selected CVSS metric records a network-reachable, unauthenticated path with no user interaction.
  • EPSS is 4.63% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • Restrict the affected network interface to trusted sources where business-safe.
  • Increase monitoring for the attack path and post-exploitation behaviour described in the report.

Verification

  1. Confirm that the asset runs Unknown https://github.com/curl/curl and falls inside the recorded affected range.
  2. Verify the installed build against the product-specific fixed version after deployment.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: Within 3 daysRemediation target: Within 90 days

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Cross-source reconciliation

Remediation availability differs by product scope

Verified remediation exists for at least one product or source, but 7 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Distribution package intelligence

Release-specific package status

Alpine, Debian findings are scoped to the named distribution, release and source package. An absent finding does not mean a package is unaffected.

7 package states
Repository candidate not checked

A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.

Distribution releaseSource packageVendor stateFixed versionEvidence
Alpine v3.23v3.23 · maincurlVendor fix publishedAlpine records a security fix at this version. An absent entry does not mean the package is unaffected.7.74.0-r0Alpine Security Database ↗Source updated 23 Oct 2026
Alpine v3.22v3.22 · maincurlVendor fix publishedAlpine records a security fix at this version. An absent entry does not mean the package is unaffected.7.74.0-r0Alpine Security Database ↗Source updated 23 Oct 2026
Alpine v3.21v3.21 · maincurlVendor fix publishedAlpine records a security fix at this version. An absent entry does not mean the package is unaffected.7.74.0-r0Alpine Security Database ↗Source updated 23 Oct 2026
Debian trixietrixie · sourcecurlVendor fix publishedDebian records a fixed source-package version for this release.7.74.0-1Debian Security Tracker ↗Source updated 23 Oct 2026
Debian bookwormbookworm · sourcecurlVendor fix publishedDebian records a fixed source-package version for this release.7.74.0-1Debian Security Tracker ↗Source updated 23 Oct 2026
Debian forkyforky · sourcecurlVendor fix publishedDebian records a fixed source-package version for this release.7.74.0-1Debian Security Tracker ↗Source updated 23 Oct 2026
Debian sidsid · sourcecurlVendor fix publishedDebian records a fixed source-package version for this release.7.74.0-1Debian Security Tracker ↗Source updated 23 Oct 2026
Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

5 current
CVE-2020-8286 · CSAF 2.0 · revision 48 · interimSUSE Product Security TeamCVE-2020-8286
54 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • curl as component of SUSE CaaS Platform 4.0
  • libcurl-devel as component of SUSE CaaS Platform 4.0
  • libcurl4 as component of SUSE CaaS Platform 4.0
  • libcurl4-32bit as component of SUSE CaaS Platform 4.0
  • curl as component of SUSE Enterprise Storage 6
  • curl as component of SUSE Linux Enterprise High Performance Computing 12 SP4
  • libcurl4 as component of SUSE Linux Enterprise High Performance Computing 12 SP4
  • libcurl4-32bit as component of SUSE Linux Enterprise High Performance Computing 12 SP4
  • curl as component of SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS
  • libcurl-devel as component of SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS
  • libcurl4 as component of SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS
  • libcurl4-32bit as component of SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS
Summary
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.
Remediation
To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
CVE-2020-8286 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitycurl: Inferior OCSP verification
6 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • 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
  • httpd24-curl.src as a component of Red Hat Software Collections
  • httpd24-libcurl as a component of Red Hat Software Collections
  • httpd24-libcurl-devel as a component of Red Hat Software Collections
Summary
Libcurl offers "OCSP stapling" via the CURLOPT_SSL_VERIFYSTATUS option. When set, libcurl verifies the OCSP response that a server responds with as part of the TLS handshake. It then aborts the TLS negotiation if something is wrong with the response. The same feature can be enabled with --cert-status using the curl tool. As part of the OCSP response verification, a client should verify that the response is indeed set out for the correct certificate. This step was not performed by libcurl when built or told to use OpenSSL as TLS backend.
Remediation
For 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 restarted for this update to take effect.
SSA-398330 · CSAF 2.0 · revision 19 · interimSiemens ProductCERTCVE-2020-8286
5 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • 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
  • SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) >= V3.1.0 < V3.1.5
  • SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) >= V3.1.0 < V3.1.5
Summary
The libcurl library versions 7.41.0 to and including 7.73.0 are vulnerable to an improper check for certificate revocation due to insufficient verification of the OCSP response. This vulnerability could allow an attacker to pass a revoked certificate as valid.
Remediation
Update to V3.1.5 or later version
SSA-389290 · CSAF 2.0 · revision 1 · finalSiemens ProductCERTSSA-389290: Third-Party Component Vulnerabilities in SINEC INS
1 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • SINEC INS
Summary
The libcurl library versions 7.41.0 to and including 7.73.0 are vulnerable to an improper check for certificate revocation due to insufficient verification of the OCSP response. This vulnerability could allow an attacker to pass a revoked certificate as valid.
Remediation
Update to V1.0.1.1 or later version
SSA-200951 · CSAF 2.0 · revision 1 · finalSiemens ProductCERTSSA-200951: Multiple Vulnerabilities in Third-Party Component libcurl of TIM Devices
1 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • SIMATIC TIM 1531 IRC (incl. SIPLUS NET variants)
Summary
The libcurl library versions 7.41.0 to and including 7.73.0 are vulnerable to an improper check for certificate revocation due to insufficient verification of the OCSP response. This vulnerability could allow an attacker to pass a revoked certificate as valid.
Remediation
Update to V2.2 or later version
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2020-29154

No EUVD known-exploited evidence

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.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
0.0
Advisory evidence
No linked advisory details stored yet
Recommended actionPatch only the product branches with a verified fix

High technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance. Verified remediation exists for at least one product or source, but 7 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
01

What, why and how

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.

What

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.

Why

The product does not validate, or incorrectly validates, a certificate.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

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.

Why

The product does not validate, or incorrectly validates, a certificate.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
Reference recorded

A structured CVE source labels at least one public reference as exploit material. BlackTree has not independently validated that it is safe, reliable or weaponised.

Likely attack path
a network path → Improper Certificate Validation → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-295 ↗

CWE-295: Improper Certificate Validation. The product does not validate, or incorrectly validates, a certificate.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CNoneConfidentiality impact: No direct loss is represented by this metric.IHighIntegrity impact: A successful attack can cause a major loss.ANoneAvailability impact: No direct loss is represented by this metric.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkUnauthenticatedCWE-295Public exploit reference
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

ENISA EUVD · EUVD-2020-29154Official EUVD mapping

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.

Official EUVD record ↗
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Official advisory ↗
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Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in IBM QRadar SIEM ausnutzen, um seine Privilegien zu erweitern, Administratorrechte zu erlangen, beliebigen Programmcode auszuführen, Informationen offenzulegen, Dateien zu manipulieren oder Sicherheitsvorkehrungen zu umgehen.

Official advisory ↗
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Ein Angreifer kann mehrere Schwachstellen in Splunk Splunk Enterprise in diversen Komponenten von Drittanbietern ausnutzen, um einen nicht näher spezifizierten Angriff durchzuführen.

Official advisory ↗
BSI · German · WID-SEC-2023-2098cURL: Mehrere Schwachstellen

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in cURL ausnutzen, um Informationen offenzulegen, einen Denial of Service zu verursachen oder Sicherheitsvorkehrungen zu umgehen.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20201216Security Bulletin 16 Dec 2020

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 16 Dec 2020, published on 16 December 2020. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CISA · English · ICSA-23-348-10Siemens SIMATIC S7-1500

The libcurl library versions 7.41.0 to and including 7.73.0 are vulnerable to an improper check for certificate revocation due to insufficient verification of the OCSP response. This vulnerability could allow an attacker to pass a revoked certificate as valid.

Official advisory ↗
CERT-FR · French · CERTFR-2024-AVI-0297Multiples vulnérabilités dans Juniper

ERecord?id=CVE-2020-25659 Référence CVE CVE-2020-27350 https://www.cve.org/CVERecord?id=CVE-2020-27350 Référence CVE CVE-2020-27783 https://www.cve.org/CVERecord?id=CVE-2020-27783 Référence CVE CVE-2020-28493 https://www.cve.org/CVERecord?id=CVE-2020-28493 Référence CVE CVE-2020-28928 https://www.cve.org/CVERecord?id=CVE-2020-28928 Référence CVE CVE-2020-36242 https://www.cve.org/CVERecord?id=CVE-2020-36242 Référence CVE CVE-2020-8037 https://www.cve.org/CVERecord?id=CVE-2020-8037 Référence CVE CVE-2020-8284 https://www.cve.org/CVERecord?id=CVE-2020-8284 Référence CVE CVE-2020-8285 https://www.cve.org/CVERecord?id=CVE-2020-8285 Référence CVE CVE-2020-8286 https://www.cve.org/CVERecord?id=CVE-2020-8286 Référence CVE CVE-2021-20193 https://www.cve.org/CVERecord?id=CVE-2021-20193 Référence CVE CVE-2021-22946 https://www.cve.org/CVERecord?id=CVE-2021-22946 Référence CVE CVE-2021-22947 https://www.cve.org/CVERecord?id=CVE-2021-22947 Référence CVE CVE-2021-23240 https://www.cve.org/CVERecord?id=CVE-2021-23240 Référence CVE CVE-2021-28831 https://www.cve.org/CVERecord?id=CVE-2021-28831 Référence CVE CVE-2021-28957 https://www.cve.org/CVERecord?id=CVE-2021-28957 Référence CVE CVE-2021-30139 https://www.cve.org/CVERecord?id=CVE-2021-30139 Référence CVE CVE-2021-33560 https://www.cve.org/CVERecord?id=C

Official advisory ↗
CERT-FR · French · CERTFR-2023-AVI-1015Multiples vulnérabilités dans les produits Siemens

e.org/CVERecord?id=CVE-2020-36229 Référence CVE CVE-2020-36230 https://www.cve.org/CVERecord?id=CVE-2020-36230 Référence CVE CVE-2020-6096 https://www.cve.org/CVERecord?id=CVE-2020-6096 Référence CVE CVE-2020-7595 https://www.cve.org/CVERecord?id=CVE-2020-7595 Référence CVE CVE-2020-8169 https://www.cve.org/CVERecord?id=CVE-2020-8169 Référence CVE CVE-2020-8177 https://www.cve.org/CVERecord?id=CVE-2020-8177 Référence CVE CVE-2020-8231 https://www.cve.org/CVERecord?id=CVE-2020-8231 Référence CVE CVE-2020-8284 https://www.cve.org/CVERecord?id=CVE-2020-8284 Référence CVE CVE-2020-8285 https://www.cve.org/CVERecord?id=CVE-2020-8285 Référence CVE CVE-2020-8286 https://www.cve.org/CVERecord?id=CVE-2020-8286 Référence CVE CVE-2020-8315 https://www.cve.org/CVERecord?id=CVE-2020-8315 Référence CVE CVE-2020-8492 https://www.cve.org/CVERecord?id=CVE-2020-8492 Référence CVE CVE-2020-9327 https://www.cve.org/CVERecord?id=CVE-2020-9327 Référence CVE CVE-2021-20193 https://www.cve.org/CVERecord?id=CVE-2021-20193 Référence CVE CVE-2021-20227 https://www.cve.org/CVERecord?id=CVE-2021-20227 Référence CVE CVE-2021-20231 https://www.cve.org/CVERecord?id=CVE-2021-20231 Référence CVE CVE-2021-20232 https://www.cve.org/CVERecord?id=CVE-2021-20232 Référence CVE CVE-2021-20305 https://www.cve.org/CVERecord?id=CVE-202

Official advisory ↗
CERT-FR · French · CERTFR-2023-AVI-0701Multiples vulnérabilités dans Splunk

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Official advisory ↗
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.cve.org/CVERecord?id=CVE-2020-7753 Référence CVE CVE-2020-7774 https://www.cve.org/CVERecord?id=CVE-2020-7774 Référence CVE CVE-2020-8116 https://www.cve.org/CVERecord?id=CVE-2020-8116 Référence CVE CVE-2020-8169 https://www.cve.org/CVERecord?id=CVE-2020-8169 Référence CVE CVE-2020-8177 https://www.cve.org/CVERecord?id=CVE-2020-8177 Référence CVE CVE-2020-8203 https://www.cve.org/CVERecord?id=CVE-2020-8203 Référence CVE CVE-2020-8231 https://www.cve.org/CVERecord?id=CVE-2020-8231 Référence CVE CVE-2020-8284 https://www.cve.org/CVERecord?id=CVE-2020-8284 Référence CVE CVE-2020-8285 https://www.cve.org/CVERecord?id=CVE-2020-8285 Référence CVE CVE-2020-8286 https://www.cve.org/CVERecord?id=CVE-2020-8286 Référence CVE CVE-2021-20095 https://www.cve.org/CVERecord?id=CVE-2021-20095 Référence CVE CVE-2021-22876 https://www.cve.org/CVERecord?id=CVE-2021-22876 Référence CVE CVE-2021-22890 https://www.cve.org/CVERecord?id=CVE-2021-22890 Référence CVE CVE-2021-22897 https://www.cve.org/CVERecord?id=CVE-2021-22897 Référence CVE CVE-2021-22898 https://www.cve.org/CVERecord?id=CVE-2021-22898 Référence CVE CVE-2021-22901 https://www.cve.org/CVERecord?id=CVE-2021-22901 Référence CVE CVE-2021-22922 https://www.cve.org/CVERecord?id=CVE-2021-22922 Référence CVE CVE-2021-22923 https://www.cve.org/CVERecord?id=C

Official advisory ↗
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Official advisory ↗
CERT-FR · French · CERTFR-2021-AVI-791Multiples vulnérabilités dans les produits IBM

g/CVERecord?id=CVE-2020-29363 Référence CVE CVE-2020-29573 https://www.cve.org/CVERecord?id=CVE-2020-29573 Référence CVE CVE-2020-36328 https://www.cve.org/CVERecord?id=CVE-2020-36328 Référence CVE CVE-2020-36329 https://www.cve.org/CVERecord?id=CVE-2020-36329 Référence CVE CVE-2020-4951 https://www.cve.org/CVERecord?id=CVE-2020-4951 Référence CVE CVE-2020-8177 https://www.cve.org/CVERecord?id=CVE-2020-8177 Référence CVE CVE-2020-8231 https://www.cve.org/CVERecord?id=CVE-2020-8231 Référence CVE CVE-2020-8284 https://www.cve.org/CVERecord?id=CVE-2020-8284 Référence CVE CVE-2020-8285 https://www.cve.org/CVERecord?id=CVE-2020-8285 Référence CVE CVE-2020-8286 https://www.cve.org/CVERecord?id=CVE-2020-8286 Référence CVE CVE-2020-8315 https://www.cve.org/CVERecord?id=CVE-2020-8315 Référence CVE CVE-2020-8492 https://www.cve.org/CVERecord?id=CVE-2020-8492 Référence CVE CVE-2020-8617 https://www.cve.org/CVERecord?id=CVE-2020-8617 Référence CVE CVE-2020-8622 https://www.cve.org/CVERecord?id=CVE-2020-8622 Référence CVE CVE-2020-8624 https://www.cve.org/CVERecord?id=CVE-2020-8624 Référence CVE CVE-2020-8625 https://www.cve.org/CVERecord?id=CVE-2020-8625 Référence CVE CVE-2020-8927 https://www.cve.org/CVERecord?id=CVE-2020-8927 Référence CVE CVE-2020-9948 https://www.cve.org/CVERecord?id=CVE-2020-9948 Ré

Official advisory ↗
CERT-FR · French · CERTFR-2021-AVI-555Multiples vulnérabilités dans Juniper Junos OS

De multiples vulnérabilités ont été découvertes dans Juniper Junos OS. Elles permettent à un attaquant de provoquer un déni de service et une atteinte à la confidentialité des données.

Official advisory ↗
CERT-FR · French · CERTFR-2021-AVI-442Multiples vulnérabilités dans les produits Siemens

.cve.org/CVERecord?id=CVE-2016-4954 Référence CVE CVE-2016-4955 https://www.cve.org/CVERecord?id=CVE-2016-4955 Référence CVE CVE-2016-4956 https://www.cve.org/CVERecord?id=CVE-2016-4956 Référence CVE CVE-2016-7431 https://www.cve.org/CVERecord?id=CVE-2016-7431 Référence CVE CVE-2016-7433 https://www.cve.org/CVERecord?id=CVE-2016-7433 Référence CVE CVE-2016-9042 https://www.cve.org/CVERecord?id=CVE-2016-9042 Référence CVE CVE-2017-6458 https://www.cve.org/CVERecord?id=CVE-2017-6458 Référence CVE CVE-2018-0732 https://www.cve.org/CVERecord?id=CVE-2018-0732 Référence CVE CVE-2020-8169 https://www.cve.org/CVERecord?id=CVE-2020-8169 Référence CVE CVE-2020-8286 https://www.cve.org/CVERecord?id=CVE-2020-8286 Référence CVE CVE-2021-27387 https://www.cve.org/CVERecord?id=CVE-2021-27387 Référence CVE CVE-2021-27390 https://www.cve.org/CVERecord?id=CVE-2021-27390 Référence CVE CVE-2021-27399 https://www.cve.org/CVERecord?id=CVE-2021-27399 Référence CVE CVE-2021-31340 https://www.cve.org/CVERecord?id=CVE-2021-31340 Référence CVE CVE-2021-31342 https://www.cve.org/CVERecord?id=CVE-2021-31342 Référence CVE CVE-2021-31343 https://www.cve.org/CVERecord?id=CVE-2021-31343 Référence CVE CVE-2021-33712 https://www.cve.org/CVERecord?id=CVE-2021-33712 Gestion détaillée du document le 08 juin 2021 Version initiale

Official advisory ↗
CERT-FR · French · CERTFR-2021-AVI-314Multiples vulnérabilités dans les produits Apple

ple HT212325 du 26 avril 2021 https://support.apple.com/fr-fr/HT212325 Bulletin de sécurité Apple HT212326 du 26 avril 2021 https://support.apple.com/fr-fr/HT212326 Bulletin de sécurité Apple HT212327 du 26 avril 2021 https://support.apple.com/fr-fr/HT212327 Référence CVE CVE-2020-27942 https://www.cve.org/CVERecord?id=CVE-2020-27942 Référence CVE CVE-2020-3838 https://www.cve.org/CVERecord?id=CVE-2020-3838 Référence CVE CVE-2020-7463 https://www.cve.org/CVERecord?id=CVE-2020-7463 Référence CVE CVE-2020-8037 https://www.cve.org/CVERecord?id=CVE-2020-8037 Référence CVE CVE-2020-8285 https://www.cve.org/CVERecord?id=CVE-2020-8285 Référence CVE CVE-2020-8286 https://www.cve.org/CVERecord?id=CVE-2020-8286 Référence CVE CVE-2021-1739 https://www.cve.org/CVERecord?id=CVE-2021-1739 Référence CVE CVE-2021-1740 https://www.cve.org/CVERecord?id=CVE-2021-1740 Référence CVE CVE-2021-1784 https://www.cve.org/CVERecord?id=CVE-2021-1784 Référence CVE CVE-2021-1797 https://www.cve.org/CVERecord?id=CVE-2021-1797 Référence CVE CVE-2021-1805 https://www.cve.org/CVERecord?id=CVE-2021-1805 Référence CVE CVE-2021-1806 https://www.cve.org/CVERecord?id=CVE-2021-1806 Référence CVE CVE-2021-1807 https://www.cve.org/CVERecord?id=CVE-2021-1807 Référence CVE CVE-2021-1808 https://www.cve.org/CVERecord?id=CVE-2021-1808 Ré

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2020-014405curl における証明書検証に関する脆弱性

curl には、証明書検証に関する脆弱性が存在します。

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Fix availability varies by product
Affected
Fixed
Update to V3.1.5 or later version
Action
Use the product-specific evidence above. Patch only products with a verified fixed release, and keep every affected or under-investigation state without a matching fix in the remediation queue.
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
Official vendor articles1 stored document

Linked articles are downloaded and versioned as source evidence. A CVE mention or approved update relationship does not, by itself, verify a fix for every product branch.

04

Evidence and provenance

Published 14 Dec 2020 · Last source change 14 Oct 2026, 08:40 UTC · CWE-295 · Improper Certificate Validation

CVE recordCVE.org · 5.2
CVSS sourceNIST NVD
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2020-29154
Product sourceVendor CSAF · SUSE Product Security Team
Remediation sourceVendor CSAF · SUSE Product Security Team
CWE sourceCNA
NVD statusNVD modified after enrichment

Missing structured fields: affected product. Missing data is not evidence of low risk; review the primary advisory.

Material change intelligence

What changed after publication

View recent updates ↗
  1. Vendor guidanceAuthoritative vendor guidance changed: added remediation: hackerone.com/1048457; removed remediation: cert-portal.siemens.com/ssa-398330.html.
    Before
    patch: cert-portal.siemens.com/ssa-389290.pdf · patch: hackerone.com/1048457 · patch: oracle.com/cpuapr2022.html · 2 more references
    After
    patch: cert-portal.siemens.com/ssa-389290.pdf · patch: hackerone.com/1048457 · patch: oracle.com/cpuapr2022.html · 2 more references
    hackerone.com ↗
  2. Affected versionsThe structured affected or fixed version information changed.
    Before
    7.41.0 to and including 7.73.0 · Fixed: Update to V3.1.5 or later version
    After
    https://github.com/curl/curl: 7.41.0 to and including 7.73.0 · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
    CNA ↗
  3. Affected versionsThe structured affected or fixed version information changed.
    Before
    https://github.com/curl/curl: 7.41.0 to and including 7.73.0 · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
    After
    https://github.com/curl/curl: 7.41.0 to and including 7.73.0 · Fixed: Update to V3.1.5 or later version
    Siemens ProductCERT ↗
  4. Affected versionsThe structured affected or fixed version information changed.
    Before
    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); SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0); SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)
    After
    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; SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) >= V3.1.0 < V3.1.5; SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) >= V3.1.0 < V3.1.5
    Siemens ProductCERT ↗
  5. Affected versionsThe structured affected or fixed version information changed.
    Before
    7.41.0 to and including 7.73.0 · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
    After
    7.41.0 to and including 7.73.0 · Fixed: Update to V3.1.5 or later version
    Siemens ProductCERT ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Fixed release or patch reference recorded
Fixed release recorded from official guidance
ENISA EUVD · EUVD-2020-29154↗Vendor CSAF · SUSE Product Security Team↗Siemens ProductCERT security advisory · Siemens SSA-398330↗Public exploit reference↗Vendor advisory↗Patch or update reference↗Patch or update reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2020-8286 · cve.blacktree.nl