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CVE-2020-15777

21
FAUCET Score

CVE-2020-15777 is a critical deserialization vulnerability affecting the Maven Extension plugin before version 1.6 for Gradle Enterprise. The extension's use of unrestricted deserialization of Java objects over an unbounded socket connection allows for remote code execution (RCE) and local privilege escalation (LPE) through malicious gadget chains. With a CVSS score of 7.8 (High), exploitation requires local access and low privileges, but no user interaction. Despite its high severity, there is currently no public exploit code available, nor is there evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.6CPE matchmatch criteria
cpe:2.3:a:gradle:maven:*:*:*:*:*:gradle:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.05%
Probability of exploitation in next 30 days
EPSS Percentile
60.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0105 is in the 92nd percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

mavenpatch availablevia ghsa
Product: com.gradle:gradle-enterprise-maven-extensionFixed in: 1.6

Vendor Advisories (1)

mavenGHSA-vp55-fhxx-vcx8high

Maven Extension plugin for Gradle Enterprise vulnerable to Deserialization of Untrusted Data

May 24, 2022

References

docs.gradle.com / enterprise/maven-extension
Release NotesVendor Advisory
security.gradle.com / advisory/CVE-2020-15777
Vendor Advisory