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CVE-2020-29582 JetBrains Kotlin

Affected softwareJetBrains Kotlin
Severity5.3 Medium CVSS 3.1 2 scores
Fixed in1.4.21
WeaknessCWE-276
Published3 Feb 2021
Updated17 Jun 2026

Description

In JetBrains Kotlin before 1.4.21, a vulnerable Java API was used for temporary file and folder creation. An attacker was able to read data from such files and list directories due to insecure permissions.

Exploitation status

No public exploit

No exploit has been reported in the sources we check. Published 5 years ago.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment no assessment published
  • Indexed PoC none indexed
  • EPSS 2.6% chance in 30 days

Waratek protection

No exploit published

Within Waratek scope. In the sources we check, nobody has published exploit code for this CVE or reported it being exploited.

A public code fix exists.

  • Protection none
  • Action unverified
  • Review automated Upstream data
  • Record active
Decided by Exploit code for this candidate, published in a reviewed catalogue or a GitHub repository with 5 or more stars, or in use per CISA or VulnCheck; not only a CISA verdict, a forecast, or nothing at all
Finding This CVE is not listed in CISA KEV or VulnCheck KEV, CISA Vulnrichment records no active exploitation, no reviewed exploit catalogue carries an entry for it, and no GitHub PoC repository for it has 5 or more stars. Nobody has published exploit code worth tracing, so it is not a candidate for a rule ahead of the ones where somebody has; an upstream fix path does exist, so the remediation half of the candidacy still holds. This is a statement about what has been published, not about whether the defect is reachable or serious.

CVSS

5.3 MEDIUM v3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N 2 metrics

We show the highest score from the newest CVSS version. Scores from different versions can't be compared, and the first score listed is sometimes a 0.0 placeholder.

VersionScoreBandVectorAssignerType
CVSS 3.1 5.3 MEDIUM CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N NVD Primary published
CVSS 2.0 5.0 none AV:N/AC:L/Au:N/C:P/I:N/A:N NVD Primary

Affected software and releases

Oracle advisories

AdvisoryTypeQuarterProducts Oracle names in its risk matrix
Oracle Critical Patch Update October 2023 ↗ CPU 2023-Q4 Oracle Communications / Install/Upgrade (JetBrains Kotlin) (23.1.0-23.1.8, 23.2.0-23.2.4)
Oracle Critical Patch Update October 2022 ↗ CPU 2022-Q4 Oracle Communications / Platform (JetBrains Kotlin) (12.6.0)
Oracle Critical Patch Update April 2022 ↗ CPU 2022-Q2 Oracle Communications / Policy (Kotlin) (1.14.0)
Oracle Critical Patch Update January 2022 ↗ CPU 2022-Q1 Oracle Communications / SCP (Kotlin) (1.14.0)
Oracle Critical Patch Update July 2021 ↗ CPU 2021-Q3 Oracle Communications / Signaling (Calico) (1.2.1)

Oracle components and versions

FamilyComponentVersions, as Oracle lists themRead as
Oracle Communications Install/Upgrade (JetBrains Kotlin) 23.1.0-23.1.8, 23.2.0-23.2.4
Oracle Communications Platform (JetBrains Kotlin) 12.6.0 12.6.0
Oracle Communications Policy (Kotlin) 1.14.0 1.14.0
Oracle Communications SCP (Kotlin) 1.14.0 1.14.0
Oracle Communications Signaling (Calico) 1.2.1 1.2.1

Maven packages

Affected and fixed versions, from OSV.dev
PackageIntroducedFixedLast affected
org.jetbrains.kotlin:kotlin-stdlib 0 1.4.21 unbounded

Products and versions

5 products, 5 version entries
SourceVendorProductSchemeAffected versions
nvd jetbrains kotlin generic < 2.1.0
nvd oracle communications cloud native core network slice selection function generic 1.2.1
nvd oracle communications cloud native core policy generic 1.14.0
nvd oracle communications cloud native core service communication proxy generic 1.14.0
osv org.jetbrains.kotlin kotlin-stdlib generic < 1.4.21

References

URLTags
https://blog.jetbrains.com WEB
https://blog.jetbrains.com/blog/2021/02/03/jetbrains-security-bulletin-q4-2020 WEB
https://lists.apache.org/thread.html/r2721aba31a8562639c4b937150897e24f78f747cdbda8641c0f659fe@%3Cusers.kafka.apache.org%3E WEB
https://www.oracle.com//security-alerts/cpujul2021.html WEB
https://www.oracle.com/security-alerts/cpuapr2022.html WEB
https://www.oracle.com/security-alerts/cpujan2022.html WEB
https://blog.jetbrains.com/blog/2021/02/03/jetbrains-security-bulletin-q4-2020/ Vendor Advisory
https://lists.apache.org/thread.html/r2721aba31a8562639c4b937150897e24f78f747cdbda8641c0f659fe%40%3Cusers.kafka.apache.org%3E Third Party Advisory

Timeline

Published2021-02-03By the CVE Program.
NVD record modified2026-06-17NVD's own last-modified date for this record.