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TI-2023-21946 Aliases CVE-2023-41349GHSA-xqpv-jvpq-xjvc

ASUS RT-AX88U - externally-controlled format string

Priority MEDIUM 42CWE-134Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-134 and the CVSS impact.

Summary

ASUS router RT-AX88U has a vulnerability of using externally controllable format strings within its Advanced Open VPN function. An authenticated remote attacker can exploit the exported OpenVPN configuration to execute an externally-controlled format string attack, resulting in sensitivity information leakage, or forcing the device to reset and permanent denial of service.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00863 58th percentileScored 2026-11-07
Fix Fixed RT-AX88U (ASUS): 3.0.0.4_388_23748

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ASUSRT-AX88U to before 3.0.0.4_388_237483.0.0.4_388_23748Patch availableCNA
  • RT-AX88U VendorASUS Affected to before 3.0.0.4_388_23748 Fixed in 3.0.0.4_388_23748 Patch available CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:asus:rt-ax88u_firmware:*:*:*:*:*:*:*:*before 3.0.0.4.388.23748VulnerableASUS
cpe:2.3:h:asus:rt-ax88u:-:*:*:*:*:*:*:*not specified by NVDRunning onASUS
  • cpe:2.3:o:asus:rt-ax88u_firmware:*:*:*:*:*:*:*:* Versions before 3.0.0.4.388.23748 Vulnerable ·ASUS
  • cpe:2.3:h:asus:rt-ax88u:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·ASUS

Remediation

  • Fix · CNA RT-AX88U (ASUS) Fixed in 3.0.0.4_388_23748

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-41349
  2. 2026-10-03 Alias added: GHSA-xqpv-jvpq-xjvc

References

Advisory 1

  • TI-2021-18228 A brute-force protection bypass in CAPTCHA protection in ASUS ROG Rapture GT-AX11000… CVSS 3.1CRITICAL 9.8
  • TI-2021-02220 In ASUS RT-AX3000, ZenWiFi AX (XT8), RT-AX88U, and other ASUS routers with firmware <… CVSS 3.1HIGH 7.5
  • TI-2022-09945 ASUS RT-AX88U - Format String CVSS 3.1CRITICAL 9.8
  • TI-2023-17191 ASUS RT-AX88U - Out-of-bounds Read - 2 CVSS 3.1HIGH 7.5
  • TI-2021-19533 ASUS RT-A88U 3.0.0.4.386_45898 is vulnerable to Cross Site Scripting (XSS). CVSS 3.1CRITICAL 9.0
  • TI-2021-18229 An HTTP request smuggling in web application in ASUS ROG Rapture GT-AX11000, RT-AX3000… CVSS 3.1HIGH 7.5
See all 10 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences