Apps
CVE-2020-1019 — Microsoft RMS Sharing App for Mac Elevation of Privilege Vulnerability
Executive Summary
An elevation of privilege vulnerability exists in RMS Sharing App for Mac in the way it allows an attacker to load unsigned binaries. An attacker could then install programs; view, change, or delete data with the logged in user's privileges. To exploit this vulnerability, an attacker would first have to get access to the victim's system. The update addresses the vulnerability by correcting how the app validates signatures.
Overview
7.8
CVSS HIGH
Important
MS Severity
Not Exploited
MS Exploit Status
Less Likely
MS Exploit Likelihood
CVSS Vector
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
EPSS Score
0.00933
probability of exploitation in the next 30 days
0.57625 percentile - updated 2026-08-14
View on FIRST.org
Affected Products
1 affected product
| Product | KB Article | Severity | Impact | Restart Required |
|---|---|---|---|---|
| Microsoft RMS Sharing for Mac | Release Notes (Security Update) |
Important | Elevation of Privilege | Maybe |
Patches
1 patch
| Article | Type | Restart |
|---|---|---|
Release Notes |
Security Update | Maybe |
Exploits & PoC
No public exploit or PoC has been linked for this CVE yet. When available, references are sourced from public repositories and may be unverified or non-functional — review carefully before use.
Detection Rules
No public Sigma or Nuclei detection rule has been mapped to this CVE yet. Coverage is concentrated on exploited / high-profile vulnerabilities; check SigmaHQ for updates.
Acknowledgments
Yigit Can YILMAZ (@yilmazcanyigit)
References
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