How severe is CVE-2021-22396?

CVE-2021-22396 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-22396 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-22396?

CVE-2021-22396 primarily affects Huawei Ecns280 Td Firmware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-22396?

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-2021-22396 published?

CVE-2021-22396 was published on 2021-08-02 and last updated on 2026-06-17.

CVE-2021-22396

CVE-2021-22396 is a high-severity vulnerability in Huawei Ecns280 Td Firmware with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-269.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 4.6
EPSS exploit prediction: 0% (4th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-269
Affected product: Huawei Ecns280 Td Firmware
Published: 2021-08-02
Last modified: 2026-06-17

Description

There is a privilege escalation vulnerability in some Huawei products. Due to improper privilege management, a local attacker with common privilege may access some specific files in the affected products. Successful exploit will cause privilege escalation.Affected product versions include:eCNS280_TD V100R005C00,V100R005C10;eSE620X vESS V100R001C10SPC200,V100R001C20SPC200.

Frequently asked questions

What is CVE-2021-22396?: There is a privilege escalation vulnerability in some Huawei products. Due to improper privilege management, a local attacker with common privilege may access some specific files in the affected products. Successful exploit will cause privilege escalation.Affected product versions include:eCNS280_TD V100R005C00,V100R005C10;eSE620X vESS V100R001C10SPC200,V100R001C20SPC200.
How severe is CVE-2021-22396?: CVE-2021-22396 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-22396 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-22396?: CVE-2021-22396 primarily affects Huawei Ecns280 Td Firmware. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-22396?: 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-2021-22396 published?: CVE-2021-22396 was published on 2021-08-02 and last updated on 2026-06-17.

References

https://www.huawei.com/en/psirt/security-advisories/huawei-sa-20210714-01-privilege-en

Affected products (4)

cpe:2.3:o:huawei:ecns280_td_firmware:v100r005c00:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ecns280_td_firmware:v100r005c10:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ese620x_vess_firmware:v100r001c10spc200:*:*:*:*:*:*:*
cpe:2.3:o:huawei:ese620x_vess_firmware:v100r001c20spc200:*:*:*:*:*:*:*

More vulnerabilities in Huawei Ecns280 Td Firmware

CVE-2021-22363 — High (CVSS 7.5): There is a resource management error vulnerability in eCNS280_TD V100R005C10SPC650. An attacker needs to perform…
CVE-2021-40007 — Medium (CVSS 6.5): There is an information leak vulnerability in eCNS280_TD V100R005C10SPC650. The vulnerability is caused by improper log…
CVE-2021-39995 — Medium (CVSS 6.5): Some Huawei products use the OpenHpi software for hardware management. A function that parses data returned by OpenHpi…
CVE-2021-37036 — Medium (CVSS 5.5): There is an information leakage vulnerability in FusionCompute 6.5.1, eCNS280_TD V100R005C00 and V100R005C10. Due to…
CVE-2021-22378 — Medium (CVSS 5.3): There is a race condition vulnerability in eCNS280_TD V100R005C00 and V100R005C10. There is a timing window exists in…
CVE-2021-22383 — Medium (CVSS 4.9): There is an out-of-bounds read vulnerability in eCNS280_TD V100R005C10 and eSE620X vESS V100R001C10SPC200,…

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