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CVE-2019-20627

AutoUpdater.NET allows XXE

9.8 CriticalFix available

AutoUpdater.cs in AutoUpdater.NET before 1.5.8 allows XXE.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

2.34%Up 1.5 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 9.8

AutoUpdater.cs in AutoUpdater.NET before 1.5.8 allows XXE.

Record
CVE-2019-20627
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness
CWE-611
Updated
2026-11-02
CVE List No score

AutoUpdater.cs in AutoUpdater.NET before 1.5.8 allows XXE.

Record
CVE-2019-20627
Updated
2026-11-02
EUVDEUVD-2022-2926 No score

AutoUpdater.cs in AutoUpdater.NET before 1.5.8 allows XXE.

Record
EUVD-2022-2926
Updated
2026-11-03
GitHub AdvisoriesGHSA-75p2-hgw4-g7f7 9.8

AutoUpdater.NET allows XXE

AutoUpdater.cs in AutoUpdater.NET before 1.5.8 allows XXE.

Record
GHSA-75p2-hgw4-g7f7
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-611
Updated
2026-11-02
OSV 9.8

AutoUpdater.cs in AutoUpdater.NET before 1.5.8 allows XXE.

Record
CVE-2019-20627
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVGHSA-75p2-hgw4-g7f7 9.8

AutoUpdater.NET allows XXE

AutoUpdater.cs in AutoUpdater.NET before 1.5.8 allows XXE.

Record
GHSA-75p2-hgw4-g7f7
CVSS 3.1
9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-611
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
Autoupdater.NET.Official
NuGet
before 1.5.8
1.5.8
Autoupdater.NET.Official
NuGet
before 1.5.8, plus listed versions
1.3.21.4.01.4.11.4.101.4.11
Show 16 moreShow less
1.4.21.4.31.4.41.4.51.4.61.4.71.4.81.4.91.5.01.5.11.5.21.5.31.5.41.5.51.5.61.5.7
1.5.8

History

History
RecordedChangedSources
facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

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

In short

CVE-2019-20627 is a critical vulnerability (CVSS 9.8) in Rbsoft Autoupdater.net, published March 23, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.34%, the 83rd percentile. Fixed in Autoupdater.NET.Official 1.5.8.

References

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