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TI-2021-20826 Aliases CVE-2021-45757GHSA-fhfv-jcfj-9cg7

ASUS AC68U <=3.0.0.4.385.20852 is affected by a buffer overflow in blocking.cgi, which…

Priority LOW 35CWE-120Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.

Summary

ASUS AC68U <=3.0.0.4.385.20852 is affected by a buffer overflow in blocking.cgi, which may cause a denial of service (DoS).

Why it matters now

EPSS 0.01082 65th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:asus:rt-ac68u_firmware:*:*:*:*:*:*:*:*up to 3.0.0.4.385.20852VulnerableASUS
cpe:2.3:h:asus:rt-ac68u:-:*:*:*:*:*:*:*not specified by NVDRunning onASUS
  • cpe:2.3:o:asus:rt-ac68u_firmware:*:*:*:*:*:*:*:* Versions up to 3.0.0.4.385.20852 Vulnerable ·ASUS
  • cpe:2.3:h:asus:rt-ac68u:-:*:*:*:*:*:*:* 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-2021-45757
  2. 2026-10-03 Alias added: GHSA-fhfv-jcfj-9cg7

References

Exploit 1

  • TI-2021-15305 Directory Traversal vulnerability in Cloud Disk in ASUS RT-AC68U router firmware version… CVSS 3.1CRITICAL 9.1
  • TI-2021-15303 Incorrect Access Control issue discoverd in Cloud Disk in ASUS RT-AC68U router firmware… CVSS 3.1CRITICAL 9.1
  • TI-2021-15304 SQL injection vulnerability in Cloud Disk in ASUS RT-AC68U router firmware version before… CVSS 3.1HIGH 7.5
  • TI-2021-02220 In ASUS RT-AX3000, ZenWiFi AX (XT8), RT-AX88U, and other ASUS routers with firmware <… CVSS 3.1HIGH 7.5
  • TI-2013-05070 The Network Analysis tab (Main_Analysis_Content.asp) in the ASUS RT-AC68U and other RT… CVSS 2.0HIGH 8.5
  • 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
See all 13 →

Sources

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