How severe is CVE-2019-7391?

CVE-2019-7391 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-2019-7391 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 14% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-7391?

CVE-2019-7391 primarily affects Zyxel Dsl-491hnu-b10b 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-2019-7391?

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-2019-7391 published?

CVE-2019-7391 was published on 2019-03-21 and last updated on 2026-06-17.

CVE-2019-7391

CVE-2019-7391 is a high-severity vulnerability in Zyxel Dsl-491hnu-b10b Firmware with a CVSS 3.x base score of 8.8. Its EPSS exploit-prediction score of 14% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-352.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.8
EPSS exploit prediction: 14% (96th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-352
Affected product: Zyxel Dsl-491hnu-b10b Firmware
Published: 2019-03-21
Last modified: 2026-06-17

Description

ZyXEL VMG3312-B10B DSL-491HNU-B1B v2 devices allow login/login-page.cgi CSRF.

Frequently asked questions

What is CVE-2019-7391?: ZyXEL VMG3312-B10B DSL-491HNU-B1B v2 devices allow login/login-page.cgi CSRF.
How severe is CVE-2019-7391?: CVE-2019-7391 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-2019-7391 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 14% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-7391?: CVE-2019-7391 primarily affects Zyxel Dsl-491hnu-b10b 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-2019-7391?: 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-2019-7391 published?: CVE-2019-7391 was published on 2019-03-21 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:o:zyxel:dsl-491hnu-b10b_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:zyxel:dsl-491hnu-b1b_v2_firmware:-:*:*:*:*:*:*:*

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