How severe is CVE-2023-43314?

CVE-2023-43314 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-43314 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-43314?

CVE-2023-43314 affects Zyxel Pmg2005-t20b Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-43314?

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-2023-43314 published?

CVE-2023-43314 was published on 2023-09-27 and last updated on 2026-06-17.

CVE-2023-43314

CVE-2023-43314 is a high-severity vulnerability in Zyxel Pmg2005-t20b Firmware with a CVSS 3.x base score of 7.5. 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-120.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (47th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Zyxel Pmg2005-t20b Firmware
Published: 2023-09-27
Last modified: 2026-06-17

Description

** UNSUPPORTED WHEN ASSIGNED **The buffer overflow vulnerability in the Zyxel PMG2005-T20B firmware version V1.00(ABNK.2)b11_C0 could allow an unauthenticated attacker to cause a denial of service condition via a crafted uid.

Frequently asked questions

What is CVE-2023-43314?: ** UNSUPPORTED WHEN ASSIGNED **The buffer overflow vulnerability in the Zyxel PMG2005-T20B firmware version V1.00(ABNK.2)b11_C0 could allow an unauthenticated attacker to cause a denial of service condition via a crafted uid.
How severe is CVE-2023-43314?: CVE-2023-43314 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-43314 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-43314?: CVE-2023-43314 affects Zyxel Pmg2005-t20b Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-43314?: 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-2023-43314 published?: CVE-2023-43314 was published on 2023-09-27 and last updated on 2026-06-17.

References

https://github.com/Rumble00/Rumble/issues/1

Affected products (1)

cpe:2.3:o:zyxel:pmg2005-t20b_firmware:-:*:*:*:*:*:*:*

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