How severe is CVE-2022-23971?

CVE-2022-23971 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2022-23971 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-23971?

CVE-2022-23971 affects Asus Rt-ax56u Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-23971?

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-2022-23971 published?

CVE-2022-23971 was published on 2022-04-07 and last updated on 2026-06-17.

CVE-2022-23971

CVE-2022-23971 is a high-severity vulnerability in Asus Rt-ax56u Firmware with a CVSS 3.x base score of 8.1. 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-22.

Key facts

Severity: High (CVSS 3.x base score 8.1)
CVSS v2: 4.8
EPSS exploit prediction: 0% (38th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-22
Affected product: Asus Rt-ax56u Firmware
Published: 2022-04-07
Last modified: 2026-06-17

Description

ASUS RT-AX56U’s update_PLC/PORT file has a path traversal vulnerability due to insufficient filtering for special characters in the URL parameter. An unauthenticated LAN attacker can overwrite a system file by uploading another PLC/PORT file with the same file name, which results in service disruption.

Frequently asked questions

What is CVE-2022-23971?: ASUS RT-AX56U’s update_PLC/PORT file has a path traversal vulnerability due to insufficient filtering for special characters in the URL parameter. An unauthenticated LAN attacker can overwrite a system file by uploading another PLC/PORT file with the same file name, which results in service disruption.
How severe is CVE-2022-23971?: CVE-2022-23971 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
Is CVE-2022-23971 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (38th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-23971?: CVE-2022-23971 affects Asus Rt-ax56u Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-23971?: 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-2022-23971 published?: CVE-2022-23971 was published on 2022-04-07 and last updated on 2026-06-17.

References

https://www.twcert.org.tw/tw/cp-132-5785-cf8db-1.html

Affected products (1)

cpe:2.3:o:asus:rt-ax56u_firmware:3.0.0.4.386.45898:*:*:*:*:*:*:*

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