Vulnerability · Published Feb 3, 2021 · Assigned by mitre

CVE-2020-29582

Medium 5.3

In plain English

A medium-severity security flaw in the kotlin package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.6% (higher than 85% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.3Medium
Exploit odds (30 days)2.6%top 14.6% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12kotlinno fix listedDEBIAN-CVE-2020-29582
Debian:13kotlin1.3.31+ds1-3DEBIAN-CVE-2020-29582
Debian:14kotlin1.3.31+ds1-3DEBIAN-CVE-2020-29582
Mavenorg.jetbrains.kotlin:kotlin-stdlib1.4.21GHSA-cqj8-47ch-rvvq
Ubuntu:22.04:LTSkotlinno fix listedUBUNTU-CVE-2020-29582
Ubuntu:24.04:LTSkotlinno fix listedUBUNTU-CVE-2020-29582
Ubuntu:25.10kotlinno fix listedUBUNTU-CVE-2020-29582
Ubuntu:26.04:LTSkotlinno fix listedUBUNTU-CVE-2020-29582
Ubuntu:26.10kotlinno fix listedUBUNTU-CVE-2020-29582

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

References