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CVE-2021-27058

Microsoft Office ClickToRun Remote Code Execution Vulnerability

7.8 HighFix available

Microsoft Office ClickToRun Remote Code Execution Vulnerability

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

3.54%Down 6.0 points since Apr 14, 2021
90%50%10%1%

What each source reports

CVE List Score used 7.8

Microsoft Office ClickToRun Remote Code Execution Vulnerability

Microsoft Office ClickToRun Remote Code Execution Vulnerability

Record
CVE-2021-27058
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Updated
2026-11-02
EUVDEUVD-2021-13829 7.8

Microsoft Office ClickToRun Remote Code Execution Vulnerability

Record
EUVD-2021-13829
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Updated
2026-11-02
GitHub AdvisoriesGHSA-whx5-mmrp-j392 7.8

Microsoft Office ClickToRun Remote Code Execution Vulnerability

Microsoft Office ClickToRun Remote Code Execution Vulnerability

Record
GHSA-whx5-mmrp-j392
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
NVD 7.8

Microsoft Office ClickToRun Remote Code Execution Vulnerability

Record
CVE-2021-27058
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0
9.3 HighAV:N/AC:M/Au:N/C:C/I:C/A:C
Updated
2026-11-02
OSVopenSUSE-SU-2024:11245-1 No score

python36-oletools-0.60-2.2 on GA media

These are all security issues fixed in the python36-oletools-0.60-2.2 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:11245-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:14151-1 No score

python310-oletools-0.60.1-1.2 on GA media

These are all security issues fixed in the python310-oletools-0.60.1-1.2 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:14151-1
Updated
2026-11-02
OSVopenSUSE-SU-2026:12022-1 No score

python313-oletools-0.60.2-2.4 on GA media

These are all security issues fixed in the python313-oletools-0.60.2-2.4 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2026:12022-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
python-oletools
openSUSE:Tumbleweed
before 0.60.1-1.2
0.60.1-1.2
python-oletools
openSUSE:Tumbleweed
From an advisory covering 2 CVEs
before 0.60.2-2.4
0.60.2-2.4

History

History
RecordedChangedSources
affected, facts
first indexedCVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-27058 is a high vulnerability (CVSS 7.8) in Microsoft 365 Apps, published March 11, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 3.54%, the 89th percentile. Fixed in python-oletools 0.60.1-1.2.

References

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