How severe is CVE-2021-22292?

CVE-2021-22292 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-22292 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-22292?

CVE-2021-22292 primarily affects Huawei Ecns280 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-22292?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-22292 published?

CVE-2021-22292 was published on 2021-02-06 and last updated on 2026-06-17.

CVE-2021-22292

CVE-2021-22292 is a high-severity vulnerability in Huawei Ecns280 Firmware with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 7.8
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Huawei Ecns280 Firmware
Published: 2021-02-06
Last modified: 2026-06-17

Description

There is a denial of service (DoS) vulnerability in eCNS280 versions V100R005C00, V100R005C10. Due to a design defect, remote unauthorized attackers send a large number of specific messages to affected devices, causing system resource exhaustion and web application DoS.

Frequently asked questions

What is CVE-2021-22292?: There is a denial of service (DoS) vulnerability in eCNS280 versions V100R005C00, V100R005C10. Due to a design defect, remote unauthorized attackers send a large number of specific messages to affected devices, causing system resource exhaustion and web application DoS.
How severe is CVE-2021-22292?: CVE-2021-22292 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-22292 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-22292?: CVE-2021-22292 primarily affects Huawei Ecns280 Firmware. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-22292?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-22292 published?: CVE-2021-22292 was published on 2021-02-06 and last updated on 2026-06-17.

References

https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20210113-02-dos-en

Affected products (2)

cpe:2.3:o:huawei:ecns280_firmware:v100r005c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ecns280_firmware:v100r005c10:*:*:*:*:*:*:*

More vulnerabilities in Huawei Ecns280 Firmware

CVE-2021-22361 — High (CVSS 7.8): There is an improper authorization vulnerability in eCNS280 V100R005C00, V100R005C10 and eSE620X vESS…
CVE-2021-22338 — Medium (CVSS 5.3): There is an XXE injection vulnerability in eCNS280 V100R005C00 and V100R005C10. A module does not perform the strict…

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