How severe is CVE-2019-3426?

CVE-2019-3426 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2019-3426 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-3426?

CVE-2019-3426 affects Zte Zxupn-9000e Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-3426?

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-2019-3426 published?

CVE-2019-3426 was published on 2019-11-08 and last updated on 2026-06-17.

CVE-2019-3426

CVE-2019-3426 is a high-severity vulnerability in Zte Zxupn-9000e Firmware with a CVSS 3.x base score of 8.8. 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-20.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 7.5
EPSS exploit prediction: 1% (59th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Zte Zxupn-9000e Firmware
Published: 2019-11-08
Last modified: 2026-06-17

Description

The 9000EV5.0R1B12 version, and all earlier versions of ZTE product ZXUPN-9000E are impacted by the input validation vulnerability. An attacker could exploit this vulnerability for unauthorized operations.

Frequently asked questions

What is CVE-2019-3426?: The 9000EV5.0R1B12 version, and all earlier versions of ZTE product ZXUPN-9000E are impacted by the input validation vulnerability. An attacker could exploit this vulnerability for unauthorized operations.
How severe is CVE-2019-3426?: CVE-2019-3426 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2019-3426 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (59th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-3426?: CVE-2019-3426 affects Zte Zxupn-9000e Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-3426?: 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-2019-3426 published?: CVE-2019-3426 was published on 2019-11-08 and last updated on 2026-06-17.

References

http://support.zte.com.cn/support/news/LoopholeInfoDetail.aspx?newsId=1011683

Affected products (1)

cpe:2.3:o:zte:zxupn-9000e_firmware:*:*:*:*:*:*:*:*

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