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CVE-2021-28973

18
FAUCET Score

CVE-2021-28973 describes an XML External Entity (XXE) vulnerability in the XML Import functionality of the Perforce Helix ALM Administration console, specifically affecting version 2020.3.1 Build 22. This flaw, rated Medium severity (CVSS 4.9), allows authenticated attackers with high privileges to achieve information disclosure by submitting malicious XML data. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
2020.3.1CPE matchmatch criteria
cpe:2.3:a:perforce:helix_alm:2020.3.1:build_22:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

4.9MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.2
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.89%
Probability of exploitation in next 30 days
EPSS Percentile
55.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0089 is in the 60th percentile among its peer group of 3,565 CVEs.

Social Chatter

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

Media Mentions

No media coverage found for this CVE.

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

Remediation

Remediation records are not available for this CVE.

References

compass-security.com / fileadmin/Research/Advisories/2021-01_CSNC-2021-005_Helix_ALM_XXE.txt
ExploitThird Party Advisory