How severe is CVE-2022-45439?

CVE-2022-45439 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2022-45439 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-45439?

CVE-2022-45439 affects Zyxel Ax7501-b0 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-45439?

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

When was CVE-2022-45439 published?

CVE-2022-45439 was published on 2023-01-17 and last updated on 2026-06-17.

CVE-2022-45439

CVE-2022-45439 is a medium-severity vulnerability in Zyxel Ax7501-b0 Firmware with a CVSS 3.x base score of 6.5. 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-312.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
EPSS exploit prediction: 0% (9th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-312
Affected product: Zyxel Ax7501-b0 Firmware
Published: 2023-01-17
Last modified: 2026-06-17

Description

A pair of spare WiFi credentials is stored in the configuration file of the Zyxel AX7501-B0 firmware prior to V5.17(ABPC.3)C0 in cleartext. An unauthenticated attacker could use the credentials to access the WLAN service if the configuration file has been retrieved from the device by leveraging another known vulnerability.

Frequently asked questions

What is CVE-2022-45439?: A pair of spare WiFi credentials is stored in the configuration file of the Zyxel AX7501-B0 firmware prior to V5.17(ABPC.3)C0 in cleartext. An unauthenticated attacker could use the credentials to access the WLAN service if the configuration file has been retrieved from the device by leveraging another known vulnerability.
How severe is CVE-2022-45439?: CVE-2022-45439 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2022-45439 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (9th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-45439?: CVE-2022-45439 affects Zyxel Ax7501-b0 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-45439?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2022-45439 published?: CVE-2022-45439 was published on 2023-01-17 and last updated on 2026-06-17.

References

https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-cleartext-storage-of-wifi-credentials-and-improper-symbolic-links-of-ftp-for-ax7501-b0-cpe

Affected products (1)

cpe:2.3:o:zyxel:ax7501-b0_firmware:*:*:*:*:*:*:*:*

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