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AUSCERT Security Bulletin
Microsoft Security Update Release for Microsoft Edge (Chromium-based)
21 June 2021
AusCERT Security Bulletin Summary
Product: Microsoft Edge (Chromium-based)
Operating System: Windows
Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction
CVE Names: CVE-2021-30557 CVE-2021-30556 CVE-2021-30555
The following Chrome CVEs have been released on June 18, 2021.
These CVE were assigned by Chrome. Microsoft Edge (Chromium-based)
ingests Chromium, which addresses these vulnerabilities. Please see
Google Chrome Releases for more information. 
Edge version: 91.0.864.54
Chromium version: 91.0.4472.114 
The following vulnerabilities have been addressed:
See Security Update Guide Supports CVEs Assigned by Industry
Partners  for more information about third-party CVEs in the
Security Update Guide.
It is advised to update Edge to the latest release.
 Google Chrome Releases
 Security Update Guide
 Security Update Guide Supports CVEs Assigned by Industry Partners
AusCERT has made every effort to ensure that the information contained
in this document is accurate. However, the decision to use the information
described is the responsibility of each user or organisation. The decision to
follow or act on information or advice contained in this security bulletin is
the responsibility of each user or organisation, and should be considered in
accordance with your organisation's site policies and procedures. AusCERT
takes no responsibility for consequences which may arise from following or
acting on information or advice contained in this security bulletin.
Australian Computer Emergency Response Team
The University of Queensland
Internet Email: firstname.lastname@example.org
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
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