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TI-2023-13220 Aliases CVE-2023-28703GHSA-2pwg-h86c-qrp2

ASUS RT-AC86U - Buffer Overflow

Priority LOW 35CWE-121Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-121 and the CVSS impact.

Summary

ASUS RT-AC86U’s specific cgi function has a stack-based buffer overflow vulnerability due to insufficient validation for network packet header length. A remote attacker with administrator privileges can exploit this vulnerability to execute arbitrary system commands, disrupt system or terminate service.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00886 59th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

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-AC86U3.0.0.4.386.51255—No fix listedCNA
  • RT-AC86U VendorASUS Affected 3.0.0.4.386.51255 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:asus:rt-ac86u_firmware:3.0.0.4.386.51255:*:*:*:*:*:*:*3.0.0.4.386.51255VulnerableASUS
cpe:2.3:h:asus:rt-ac86u:-:*:*:*:*:*:*:*not specified by NVDRunning onASUS
  • cpe:2.3:o:asus:rt-ac86u_firmware:3.0.0.4.386.51255:*:*:*:*:*:*:* Versions 3.0.0.4.386.51255 Vulnerable ·ASUS
  • cpe:2.3:h:asus:rt-ac86u:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·ASUS

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-28703
  2. 2026-10-03 Alias added: GHSA-2pwg-h86c-qrp2

References

Advisory 1

  • TI-2023-17556 ASUS RT-AX56U V2 & RT-AC86U - Format String -1 CVSS 3.1HIGH 7.2
  • TI-2023-17557 ASUS RT-AX56U V2 & RT-AC86U - Format String - 2 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-2018-06370 ASUS RT-AC51U, RT-AC58U, RT-AC66U, RT-AC1750, RT-ACRH13, and RT-N12 D1 routers with… CVSS 3.0CRITICAL 9.8
  • TI-2018-06731 Main_Analysis_Content.asp in /apply.cgi on ASUS RT-AC66U, RT-AC68U, RT-AC86U, RT-AC88U… CVSS 3.0CRITICAL 9.8
  • TI-2023-20391 ASUS RT-AC86U - Command injection vulnerability - 5 CVSS 3.1HIGH 8.8
See all 18 →

Sources

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