How severe is CVE-2023-34359?

CVE-2023-34359 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-2023-34359 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-34359?

CVE-2023-34359 affects Asus Rt-ax88u Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-34359?

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-2023-34359 published?

CVE-2023-34359 was published on 2023-07-31 and last updated on 2026-06-17.

CVE-2023-34359

CVE-2023-34359 is a high-severity vulnerability in Asus Rt-ax88u 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-125.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (45th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-125
Affected product: Asus Rt-ax88u Firmware
Published: 2023-07-31
Last modified: 2026-06-17

Description

ASUS RT-AX88U's httpd is subject to an unauthenticated DoS condition. A remote attacker can send a specially crafted request to the device which causes the httpd binary to crash within the "do_json_decode()" function of ej.c, resulting in a DoS condition.

Frequently asked questions

What is CVE-2023-34359?: ASUS RT-AX88U's httpd is subject to an unauthenticated DoS condition. A remote attacker can send a specially crafted request to the device which causes the httpd binary to crash within the "do_json_decode()" function of ej.c, resulting in a DoS condition.
How severe is CVE-2023-34359?: CVE-2023-34359 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-2023-34359 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-34359?: CVE-2023-34359 affects Asus Rt-ax88u Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-34359?: 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-2023-34359 published?: CVE-2023-34359 was published on 2023-07-31 and last updated on 2026-06-17.

References

https://www.twcert.org.tw/tw/cp-132-7280-bea85-1.html

Affected products (1)

cpe:2.3:o:asus:rt-ax88u_firmware:*:*:*:*:*:*:*:*

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