CVE-2020-15824

In JetBrains Kotlin from 1.4-M1 to 1.4-RC (as Kotlin 1.3.7x is not affected by the issue. Fixed version is 1.4.0) there is a script-cache privilege escalation vulnerability due to kotlin-main-kts cached scripts in the system temp directory, which is shared by all users by default.

Published: 2020-08-08 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2020-15824 is rated Moderate Risk (63.6/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.83%). EPSS rose +1.81% over the last day, indicating growing attacker interest. Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2020-15824

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.02% 1.83% +1.81%
2 2025-03-17 0.34% 0.02% -0.31%
3 2024-12-17 — 0.34% —

Full EPSS history (14 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2020-15824

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
8.8 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 5.9 [email protected]
6.5 2.0 MEDIUM
AV:N/AC:L/Au:S/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.0 6.4 [email protected]

Weakness enumeration for CVE-2020-15824

OS Trackers for CVE-2020-15824

vendor priority summary link
debian unimportant CVE-2020-15824 unimportant priority: Debian including 1 source packages (kotlin), 3 status rows across 3 suites (bookworm, sid, trixie): resolved 3. https://security-tracker.debian.org/tracker/CVE-2020-15824
redhat high — https://access.redhat.com/security/cve/CVE-2020-15824
ubuntu medium CVE-2020-15824 medium priority: Ubuntu including 1 source packages (kotlin), 11 status rows across 11 suites (jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): ignored 7, needs-triage 4. https://ubuntu.com/security/CVE-2020-15824

Affected software / configurations for CVE-2020-15824

Vendor Product Version Raw CPE
jetbrains kotlin 1.4.0 cpe:2.3:a:jetbrains:kotlin:1.4.0:milestone1:*:*:*:*:*:*
jetbrains kotlin 1.4.0 cpe:2.3:a:jetbrains:kotlin:1.4.0:milestone2:*:*:*:*:*:*
jetbrains kotlin 1.4.0 cpe:2.3:a:jetbrains:kotlin:1.4.0:milestone3:*:*:*:*:*:*
jetbrains kotlin 1.4.0 cpe:2.3:a:jetbrains:kotlin:1.4.0:rc:*:*:*:*:*:*
oracle banking_extensibility_workbench 14.2 cpe:2.3:a:oracle:banking_extensibility_workbench:14.2:*:*:*:*:*:*:*
oracle banking_extensibility_workbench 14.3 cpe:2.3:a:oracle:banking_extensibility_workbench:14.3:*:*:*:*:*:*:*
oracle banking_extensibility_workbench 14.5 cpe:2.3:a:oracle:banking_extensibility_workbench:14.5:*:*:*:*:*:*:*
oracle communications_cloud_native_core_policy 1.14.0 cpe:2.3:a:oracle:communications_cloud_native_core_policy:1.14.0:*:*:*:*:*:*:*

References for CVE-2020-15824

URL Tags
http://www.openwall.com/lists/oss-security/2020/12/06/1 Mailing List Third Party Advisory
https://blog.jetbrains.com/blog/2020/08/06/jetbrains-security-bulletin-q2-2020/ Vendor Advisory
https://lists.apache.org/thread.html/ra12c3e23b021f259a201648005b9946acd7f618a6f32301c97047967%40%3Cannounce.apache.org%3E
https://lists.apache.org/thread.html/ra12c3e23b021f259a201648005b9946acd7f618a6f32301c97047967%40%3Cdev.groovy.apache.org%3E
https://lists.apache.org/thread.html/ra12c3e23b021f259a201648005b9946acd7f618a6f32301c97047967%40%3Cusers.groovy.apache.org%3E
https://lists.apache.org/thread.html/ra9dab34bf8625511f23692ad0fcee2725f782e9aad6c5cdff6cf4465%40%3Cnotifications.groovy.apache.org%3E
https://www.oracle.com/security-alerts/cpujan2022.html Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpuoct2021.html Patch Third Party Advisory
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