CVE-2021-28973

MEDIUMNVD 4.94.9—

4.9

The XML Import functionality of the Administration console in Perforce Helix ALM 2020.3.1 Build 22 accepts XML input data that is parsed by insecurely configured software components, leading to XXE attacks.

CVSS v3: 4.9
EG Score: 4.9(medium)
EPSS: 47.9%
KEV: Not listed

Published

April 13, 2021

Last Modified

November 21, 2024

References (2)

cve@mitrehttps://www.compass-security.com/fileadmin/Research/Advisories/2021-01_CSNC-2021-005_Helix_ALM_XXE.txt
af854a3a-2127-422b-91ae-364da2661108https://www.compass-security.com/fileadmin/Research/Advisories/2021-01_CSNC-2021-005_Helix_ALM_XXE.txt

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 11× in last 7d / 18× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
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2026-05-31 00:15 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 18:26 UTCEG score recompute
2026-05-26 18:26 UTCGHSA enrichment
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2021-28973?

CVE-2021-28973 is a medium vulnerability published on April 13, 2021. The XML Import functionality of the Administration console in Perforce Helix ALM 2020.3.1 Build 22 accepts XML input data that is parsed by insecurely configured software components, leading to XXE attacks.

When was CVE-2021-28973 disclosed?

CVE-2021-28973 was first published in the National Vulnerability Database on April 13, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-28973 actively exploited?

CVE-2021-28973 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 47.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-28973?

CVE-2021-28973 has a CVSS v3 base score of 4.9 (NVD).

How do I remediate CVE-2021-28973?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-28973, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2021-28973

📅 Published

🔄 Last Modified

🔗 References (2)

Weakness Classification(2)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2021-28973?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (2)

Frequently asked(5)

Related CVEs(same CWE)