Cyber Resilience

CVE-2021-22501

Medium

Published: 19 December 2024

Published
19 December 2024
Modified
15 April 2026
KEV Added
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Patch
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CVSS Score v4 5.3 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:Y/R:A/V:C/RE:M/U:Amber
EPSS Score 0.0029 53.1th percentile
Risk Priority 11 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-22501 is a medium-severity Improper Restriction of XML External Entity Reference (CWE-611) vulnerability in Microfocus (inferred from references). Its CVSS base score is 5.3 (Medium).

Operationally, ranked in the top 46.9% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

Improper Restriction of XML External Entity Reference vulnerability in OpenText™ Operations Bridge Manager allows Input Data Manipulation.  The vulnerability could be exploited to confidential information This issue affects Operations Bridge Manager: 2017.05, 2017.11, 2018.05, 2018.11, 2019.05, 2019.11, 2020.05, 2020.10.

CWE(s)
CWE-611

Related Threats

No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.

Affected Assets

Microfocus
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inferred from references and description; NVD did not file a CPE for this CVE

Mitigating Controls

Likely Mitigating Controls AI

Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.

CA-8 Penetration Testing
addresses: CWE-611

Penetration testing includes XML external entity payloads, detecting XXE vulnerabilities and enabling their mitigation.

SI-4 System Monitoring
addresses: CWE-611

Identifies XML external entity processing via monitoring of unusual file/network access or resource usage.

References