Cyber Resilience

CVE-2021-22338

Medium

Published: 29 June 2021

Published
29 June 2021
Modified
21 November 2024
KEV Added
—
Patch
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CVSS Score v3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
EPSS Score 0.0015 35.5th percentile
Risk Priority 11 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2021-22338 is a medium-severity Improper Restriction of XML External Entity Reference (CWE-611) vulnerability in Huawei Ecns280 Firmware. Its CVSS base score is 5.3 (Medium).

Operationally, ranked at the 35.5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability details

There is an XXE injection vulnerability in eCNS280 V100R005C00 and V100R005C10. A module does not perform the strict operation to the input XML message. Attacker can send specific message to exploit this vulnerability, leading to the module denial of service.

CWE(s)
CWE-611

Related Threats

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

Affected Assets

huawei
ecns280 firmware
v100r005c00, v100r005c10

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