How severe is CVE-2021-21741?

CVE-2021-21741 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-21741 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-21741?

CVE-2021-21741 primarily affects Zte Zxv10 M910 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-2021-21741?

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

When was CVE-2021-21741 published?

CVE-2021-21741 was published on 2021-08-30 and last updated on 2026-06-17.

CVE-2021-21741

CVE-2021-21741 is a critical-severity vulnerability in Zte Zxv10 M910 Firmware with a CVSS 3.x base score of 9.8. 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-502.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-502
Affected product: Zte Zxv10 M910 Firmware
Published: 2021-08-30
Last modified: 2026-06-17

Description

There is a command execution vulnerability in a ZTE conference management system. As some services are enabled by default, the attacker could exploit this vulnerability to execute arbitrary commands by sending specific serialization command.

Frequently asked questions

What is CVE-2021-21741?: There is a command execution vulnerability in a ZTE conference management system. As some services are enabled by default, the attacker could exploit this vulnerability to execute arbitrary commands by sending specific serialization command.
How severe is CVE-2021-21741?: CVE-2021-21741 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-21741 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-21741?: CVE-2021-21741 primarily affects Zte Zxv10 M910 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-2021-21741?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-21741 published?: CVE-2021-21741 was published on 2021-08-30 and last updated on 2026-06-17.

References

https://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1018424

Affected products (4)

cpe:2.3:o:zte:zxv10_m910_firmware:1.2.16.01u01.01:*:*:*:*:*:*:*
cpe:2.3:o:zte:zxv10_m910_firmware:1.2.19.01u01.01:*:*:*:*:*:*:*
cpe:2.3:o:zte:zxv10_m910_firmware:1.2.20.01u01.01:*:*:*:*:*:*:*
cpe:2.3:o:zte:zxv10_m910_firmware:1.2.21.01.04:p01:*:*:*:*:*:*

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