CVE-2026-4903 - Vulnerability Analysis

Overview

Tenda AC5 15.03.06.47 contains a buffer overflow caused by manipulation of the "PPPOEPassword" argument in /goform/QuickIndex POST Request Handler, letting remote attackers cause a stack-based buffer overflow, exploit requires no special privileges.

Severity & Score

Impact

Remote attackers can cause a stack-based buffer overflow, potentially leading to denial of service or remote code execution.

Mitigation

Update to the latest version.

References

• https://lavender-bicycle-a5a.notion.site/Tenda_AC5_QuickIndex_PPPOEPassword-32053a41781f808dae98f99c99bcb21c?source=copy_link
• https://vuldb.com/?ctiid.353654
• https://vuldb.com/?id.353654
• https://vuldb.com/?submit.777380
• https://www.tenda.com.cn/

Social Media Activity(1 post)

TheHackerWire

@thehackerwire

Mar 26, 2026

🟠 CVE-2026-4903 - High (8.8) A flaw has been found in Tenda AC5 15.03.06.47. This vulnerability affects the function formQuickIndex of the file /goform/QuickIndex of the component POST Request Handler. This manipulation of the argument PPPOEPassword causes stack-based buffer ... 🔗 https://www.thehackerwire.com/vulnerability/CVE-2026-4903/ #CVE #vulnerability #infosec #cybersecurity #security #Tenda #patchstack

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• Vulnerability Intelligence Dashboard
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