Important CVSS 5.5 EPSS 0.01214 2020-06 archive

Executive Summary

An information disclosure vulnerability exists when a Windows service improperly handles objects in memory. An attacker who successfully exploited this vulnerability could obtain information to further compromise the user’s system. To exploit this vulnerability, an attacker would have to log on to an affected system and run a specially crafted application. The vulnerability would not allow an attacker to execute code or to elevate user rights directly, but it could be used to obtain information that could be used to try to further compromise the affected system. The update addresses the vulnerability by correcting how a Windows service handles objects in memory.

Overview

5.5
CVSS MEDIUM
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
Category Information Disclosure
Released Jun 9 2020
Last Updated Jun 9 2020
Publicly Disclosed No
CISA KEV Not Listed
Known Exploits None Known
EPSS Score 0.01214 — 0.64549 percentile
NVD CVSS 5.5 MEDIUM — matches MSRC

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C
ATTACK VECTOR
Local
ATTACK COMPLEXITY
Low
PRIVILEGES REQUIRED
Low
USER INTERACTION
None
SCOPE
Unchanged
CONFIDENTIALITY
High
INTEGRITY
None
AVAILABILITY
None
EXPLOIT CODE MATURITY
Proof-of-Concept
REMEDIATION LEVEL
Official Fix
REPORT CONFIDENCE
Confirmed
Temporal Score: 5.0

EPSS Score

0.01214
probability of exploitation in the next 30 days
0.64549 percentile - updated 2026-06-21
View on FIRST.org

Affected Products

12 affected products
Product KB Article Severity Impact Restart Required
Windows 10 Version 1903 for 32-bit Systems 4560960 (Security Update) Important Information Disclosure Yes
Windows 10 Version 1903 for ARM64-based Systems 4560960 (Security Update) Important Information Disclosure Yes
Windows 10 Version 1903 for x64-based Systems 4560960 (Security Update) Important Information Disclosure Yes
Windows 10 Version 1909 for 32-bit Systems 4560960 (Security Update) Important Information Disclosure Yes
Windows 10 Version 1909 for ARM64-based Systems 4560960 (Security Update) Important Information Disclosure Yes
Windows 10 Version 1909 for x64-based Systems 4560960 (Security Update) Important Information Disclosure Yes
Windows 10 Version 2004 for 32-bit Systems 4557957 (Security Update) Important Information Disclosure Yes
Windows 10 Version 2004 for ARM64-based Systems 4557957 (Security Update) Important Information Disclosure Yes
Windows 10 Version 2004 for x64-based Systems 4557957 (Security Update) Important Information Disclosure Yes
Windows Server, version 1903 (Server Core installation) 4560960 (Security Update) Important Information Disclosure Yes
Windows Server, version 1909 (Server Core installation) 4560960 (Security Update) Important Information Disclosure Yes
Windows Server, version 2004 (Server Core installation) 4557957 (Security Update) Important Information Disclosure Yes

Patches

2 patches
Article Type Restart
4560960 Security Update Yes
4557957 Security Update Yes

Known Exploits

Acknowledgments

None