CVE-2026-105778: Stack-based Buffer Overflow in Tenda AC5
Description
A vulnerability has been found in Tenda AC5 02.03.01.111_multi. Affected by this issue is some unknown functionality of the file /goform/setWifi of the component Wifi Handler. Such manipulation of the argument wifiPwd leads to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used.
CVSS v4.0
Score 9.4critical
Affected software
Tenda
AC5
Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability CVE-2026-105778 affects Tenda AC5 firmware version 02.03.01.111_multi. It is a stack-based buffer overflow in the Wifi Handler component's /goform/setWifi functionality. The issue arises from improper manipulation of the wifiPwd argument, enabling remote attackers to cause a buffer overflow condition. This vulnerability has a CVSS 4.0 score of 9.4, indicating critical severity, and the exploit has been publicly disclosed. No vendor advisory or patch information is provided, so patch status is unknown.
Potential Impact
Successful exploitation of this vulnerability allows remote attackers to cause a stack-based buffer overflow, which can lead to arbitrary code execution or denial of service on the affected device. Given the critical CVSS score and remote attack vector with no required privileges or user interaction, the impact is severe for affected devices running the specified firmware version.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, network administrators should consider restricting remote access to the affected device's management interface and monitor for exploit attempts. No official patch or workaround is currently documented.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-10-05T20:34:57.881Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ac49d522cdf04f6568805fe
Added to database: 10/06/2026, 07:03:46 UTC
Last enriched: 10/06/2026, 07:19:37 UTC
Last updated: 10/06/2026, 18:57:27 UTC
Views: 18
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.