What is CVE-2022-26674?

CVE-2022-26674 is a critical-severity vulnerability in ASUS Rt-Ax88u, classified under Use of Externally-Controlled Format String. CVSS score: 9.8/10. Published 2022-04-22.

How severe is CVE-2022-26674?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2022-26674 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in ASUS Rt-Ax88u

CVE-2022-26674

ASUS RT-AX88U has a Format String vulnerability, which allows an unauthenticated remote attacker to write to arbitrary memory address and perform remote arbitrary code execution, arbitrary system operation or disrupt service.

Published 2022-04-22 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.028 (86.1th percentile), scored 2026-10-20.

Low probability of exploitation in the next 30 days, but still tracked. 86th percentile — 86.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.028 · newest: 0.028 · change: 0.000

Affected products

ASUS Rt-Ax88u — versions unspecified
ASUS Rt-Ax88u Firmware

Weakness classification (CWE)

CWE-134 — Use of Externally-Controlled Format String

Public proof-of-concept exploits

karimhabush/cyberowl

References

www.twcert.org.tw/tw/cp-132-6043-0f72c-1.html (VDB Entry, Third Party Advisory)

Frequently asked questions

What is CVE-2022-26674?: CVE-2022-26674 is a critical-severity vulnerability in ASUS Rt-Ax88u, classified under Use of Externally-Controlled Format String. CVSS score: 9.8/10. Published 2022-04-22.
How severe is CVE-2022-26674?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2022-26674 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.