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CVE-2023-20855

27
FAUCET Score

CVE-2023-20855 is an XML External Entity (XXE) vulnerability affecting VMware vRealize Orchestrator and vRealize Automation. This high-severity flaw (CVSS 8.8) allows a non-administrative attacker to bypass XML parsing restrictions using specially crafted input, potentially leading to sensitive information disclosure or privilege escalation. While there is no known active exploitation or public exploit code (Metasploit, Nuclei, ExploitDB), the vulnerability has garnered some community discussion and media coverage, indicating awareness within the security community.

Impacted Technologies

VendorProductVersion(s)CPE
>= 8.0, < 8.11.1CPE matchmatch criteria
cpe:2.3:a:vmware:vrealize_automation:*:*:*:*:*:*:*:*
>= 8.0, < 8.11.1CPE matchmatch criteria
cpe:2.3:a:vmware:vrealize_orchestrator:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.26%
Probability of exploitation in next 30 days
EPSS Percentile
66.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0126 is in the 64th percentile among its peer group of 17,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

vmwarepatch availablevia nvd_reference
View patch

References

vmware.com / security/advisories/VMSA-2023-0005.html
PatchVendor Advisory