CVE-2020-14039: golang go Improper Certificate Validation
Vulnerability summary
CVE-2020-14039 is a medium (CVSS 5.3) Improper Certificate Validation vulnerability in golang go. EPSS estimates a 1.76% chance of exploitation in the next 30 days, higher than 78% of scored vulnerabilities.
Not severe (CVSS 5.3, network access); no exploitation reported by the 5 checked sources
Source freshness unavailable
How is this decided?Advisory lineage
Upstream 0 · Downstream 7 · Related 7Timeline
- 17-07-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
In Go before 1.13.13 and 1.14.x before 1.14.5, Certificate.Verify may lack a check on the VerifyOptions.KeyUsages EKU requirements (if VerifyOptions.Roots equals nil and the installation is on Windows). Thus, X.509 certificate verification is incomplete.
CVSS metrics
2 scores · 1 source · 2 versionsEPSS trend
Probability
1.76%
Chance of exploitation in the next 30 days
Percentile
78%
Versus all other CVEs
30-day change
No change 0.00 pp
From 1.76% on 04-10-2026
Known exploited
Compare KEV catalogs
CISA KEVNot in the CISA KEV catalog.
ENISA CNWNot in the ENISA CNW catalog.
CIRCLNot in the CIRCL catalog.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.
Suse11 products
- terraform-provider-aws&distro=SUSE Linux Enterprise Module for Public Cloud 15 SP2< 3.11.0-6.3.1
- terraform-provider-azurerm&distro=SUSE Linux Enterprise Module for Public Cloud 15 SP2< 2.32.0-6.3.1
- terraform-provider-external&distro=SUSE Linux Enterprise Module for Public Cloud 15 SP2< 2.0.0-6.3.1
- terraform-provider-google&distro=SUSE Linux Enterprise Module for Public Cloud 15 SP2< 3.43.0-6.3.1
- terraform-provider-helm&distro=SUSE Linux Enterprise Module for Public Cloud 15 SP2< 1.3.2-6.3.1
Opensuse2 products
- leapEOL15.1 | 15.2
- terraform-provider-helm&distro=openSUSE Tumbleweed< 2.0.0-1.4
Go1 product
- stdlib≥ 1.14.0-0, < 1.14.5
Golang1 product
- go< 1.13.13 | ≥ 1.14.0, < 1.14.5
4 vendors · 15 products
References
18 links- groups.google.com/forum/X Refsource MISC
- lists.opensuse.org/opensuse-security-announce/2020-07/msg00077.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-07/msg00082.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-09/msg00029.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-09/msg00030.htmlVendor AdvisoryX Refsource SUSEMailing ListThird Party Advisory
- groups.google.com/forum/X Refsource CONFIRM
Show all 18 references
- go.dev/issue/39360REPORT
