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CVE-2019-20627

30
FAUCET Score

CVE-2019-20627 describes a critical XML External Entity (XXE) vulnerability in AutoUpdater.NET versions prior to 1.5.8, impacting products that utilize this library. With a CVSS score of 9.8, this flaw allows unauthenticated, remote attackers to achieve complete compromise of confidentiality, integrity, and availability of affected systems with low attack complexity. Despite its high severity, there is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.5.8CPE matchmatch criteria
cpe:2.3:a:rbsoft:autoupdater.net:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.28%
Probability of exploitation in next 30 days
EPSS Percentile
81.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0228 is in the 71st percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
nugetpatch availablevia ghsa
Product: Autoupdater.NET.OfficialFixed in: 1.5.8

Vendor Advisories (1)

nugetGHSA-75p2-hgw4-g7f7critical

AutoUpdater.NET allows XXE

May 24, 2022

References

github.com / ravibpatel/AutoUpdater.NET/commit/1dc25f2bea6ea522dbac1512b5563c4746d539c3
PatchThird Party Advisory
github.com / ravibpatel/AutoUpdater.NET/releases/tag/v1.5.8
Third Party Advisory
doyler.net / security-not-included/autoupdater-net-vulnerability
ExploitThird Party Advisory