How severe is CVE-2021-21736?

CVE-2021-21736 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-21736 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-2021-21736?

CVE-2021-21736 primarily affects Zte Zxhn Hs562 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-2021-21736?

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-2021-21736 published?

CVE-2021-21736 was published on 2021-06-10 and last updated on 2026-06-17.

CVE-2021-21736

CVE-2021-21736 is a high-severity vulnerability in Zte Zxhn Hs562 Firmware with a CVSS 3.x base score of 7.2. 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-276.

Key facts

Severity: High (CVSS 3.x base score 7.2)
CVSS v2: 8.0
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-276
Affected product: Zte Zxhn Hs562 Firmware
Published: 2021-06-10
Last modified: 2026-06-17

Description

A smart camera product of ZTE is impacted by a permission and access control vulnerability. Due to the defect of user permission management by the cloud-end app, users whose sharing permissions have been revoked can still control the camera, such as restarting the camera, restoring factory settings, etc.. This affects ZXHN HS562 V1.0.0.0B2.0000, V1.0.0.0B3.0000E

Frequently asked questions

What is CVE-2021-21736?: A smart camera product of ZTE is impacted by a permission and access control vulnerability. Due to the defect of user permission management by the cloud-end app, users whose sharing permissions have been revoked can still control the camera, such as restarting the camera, restoring factory settings, etc.. This affects ZXHN HS562 V1.0.0.0B2.0000, V1.0.0.0B3.0000E
How severe is CVE-2021-21736?: CVE-2021-21736 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-21736 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-2021-21736?: CVE-2021-21736 primarily affects Zte Zxhn Hs562 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-2021-21736?: 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-2021-21736 published?: CVE-2021-21736 was published on 2021-06-10 and last updated on 2026-06-17.

References

https://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1015964

Affected products (2)

cpe:2.3:o:zte:zxhn_hs562_firmware:1.0.0.0b2.0000:*:*:*:*:*:*:*
cpe:2.3:o:zte:zxhn_hs562_firmware:1.0.0.0b3.0000:*:*:*:*:*:*:*

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