How severe is CVE-2022-0556?

CVE-2022-0556 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-0556 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-0556?

CVE-2022-0556 affects Zyxel Zyxel Ap Configurator. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-0556?

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-2022-0556 published?

CVE-2022-0556 was published on 2022-04-11 and last updated on 2026-06-17.

CVE-2022-0556

CVE-2022-0556 is a high-severity vulnerability in Zyxel Zyxel Ap Configurator with a CVSS 3.x base score of 7.3. 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-732.

Key facts

Severity: High (CVSS 3.x base score 7.3)
CVSS v2: 7.2
EPSS exploit prediction: 0% (26th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-732
Affected product: Zyxel Zyxel Ap Configurator
Published: 2022-04-11
Last modified: 2026-06-17

Description

A local privilege escalation vulnerability caused by incorrect permission assignment in some directories of the Zyxel AP Configurator (ZAC) version 1.1.4, which could allow an attacker to execute arbitrary code as a local administrator.

Frequently asked questions

What is CVE-2022-0556?: A local privilege escalation vulnerability caused by incorrect permission assignment in some directories of the Zyxel AP Configurator (ZAC) version 1.1.4, which could allow an attacker to execute arbitrary code as a local administrator.
How severe is CVE-2022-0556?: CVE-2022-0556 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-0556 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (26th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-0556?: CVE-2022-0556 affects Zyxel Zyxel Ap Configurator. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-0556?: 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-2022-0556 published?: CVE-2022-0556 was published on 2022-04-11 and last updated on 2026-06-17.

References

https://www.zyxel.com/support/Zyxel-security-advisory-for-local-privilege-escalation-vulnerability-of-AP-Configurator.shtml

Affected products (1)

cpe:2.3:a:zyxel:zyxel_ap_configurator:1.1.4:*:*:*:*:*:*:*

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