How severe is CVE-2023-22924?

CVE-2023-22924 has a CVSS 3.x base score of 4.9, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2023-22924 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-22924?

CVE-2023-22924 affects Zyxel Nbg-418n Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-22924?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-22924 published?

CVE-2023-22924 was published on 2023-05-01 and last updated on 2026-06-17.

CVE-2023-22924

CVE-2023-22924 is a medium-severity vulnerability in Zyxel Nbg-418n Firmware with a CVSS 3.x base score of 4.9. 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: Medium (CVSS 3.x base score 4.9)
EPSS exploit prediction: 1% (52nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-120
Affected product: Zyxel Nbg-418n Firmware
Published: 2023-05-01
Last modified: 2026-06-17

Description

A buffer overflow vulnerability in the Zyxel NBG-418N v2 firmware versions prior to V1.00(AARP.14)C0 could allow a remote authenticated attacker with administrator privileges to cause denial-of-service (DoS) conditions by executing crafted CLI commands on a vulnerable device.

Frequently asked questions

What is CVE-2023-22924?: A buffer overflow vulnerability in the Zyxel NBG-418N v2 firmware versions prior to V1.00(AARP.14)C0 could allow a remote authenticated attacker with administrator privileges to cause denial-of-service (DoS) conditions by executing crafted CLI commands on a vulnerable device.
How severe is CVE-2023-22924?: CVE-2023-22924 has a CVSS 3.x base score of 4.9, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2023-22924 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (52nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-22924?: CVE-2023-22924 affects Zyxel Nbg-418n Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-22924?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2023-22924 published?: CVE-2023-22924 was published on 2023-05-01 and last updated on 2026-06-17.

References

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-multiple-vulnerabilities-in-nbg-418n-v2-home-router

Affected products (1)

cpe:2.3:o:zyxel:nbg-418n_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Zyxel Nbg-418n Firmware

CVE-2019-6710 — High (CVSS 8.8): Zyxel NBG-418N v2 v1.00(AAXM.4)C0 devices allow login.cgi CSRF.
CVE-2015-7283 — High (CVSS 8.1): The web administration interface on ZyXEL NBG-418N devices with firmware 1.00(AADZ.3)C0 has a default password of 1234…
CVE-2015-7284 — High (CVSS 8.0): Cross-site request forgery (CSRF) vulnerability on ZyXEL NBG-418N devices with firmware 1.00(AADZ.3)C0 allows remote…
CVE-2023-22922 — High (CVSS 7.5): A buffer overflow vulnerability in the Zyxel NBG-418N v2 firmware versions prior to V1.00(AARP.14)C0 could allow a…
CVE-2023-22921 — High (CVSS 7.5): A cross-site scripting (XSS) vulnerability in the Zyxel NBG-418N v2 firmware versions prior to V1.00(AARP.14)C0 could…
CVE-2023-22923 — Medium (CVSS 6.5): A format string vulnerability in a binary of the Zyxel NBG-418N v2 firmware versions prior to V1.00(AARP.14)C0 could…

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