CVE-2026-4903 Details
Description
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 overflow. The attack may be initiated remotely. The exploit has been published and may be used.
A stack-based buffer overflow vulnerability has been identified in the Tenda AC5 router, specifically in the firmware version 15.03.06.47. The issue arises in the 'formQuickIndex' function within the POST request handler, where the 'PPPOEPassword' parameter can be manipulated, leading to the overflow. This vulnerability can be exploited remotely, and a public exploit is available.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Mar 27, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://lavender-bicycle-a5a.notion.site/Tenda_AC5_QuickIndex_PPPOEPassword-32053a41781f808dae98f99c99bcb21c?source=copy_link | [email protected] | ExploitThird Party Advisory |
| https://vuldb.com/?ctiid.353654 | [email protected] | Permissions RequiredVDB Entry |
| https://vuldb.com/?id.353654 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/?submit.777380 | [email protected] | Third Party AdvisoryVDB Entry |
| https://www.tenda.com.cn/ | [email protected] | Product |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-787 | Out-of-bounds Write | [email protected] |
| CWE-119 | Improper Restriction of Operations within the Bounds of a Memory Buffer | [email protected] |
| CWE-121 | Stack-based Buffer Overflow | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| tenda ac5 firmware | 15.03.06.47 |
CPE
Remediation
| |
| tenda ac5 | 1.0 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Mar 31, 2026 | Initial Analysis | [email protected] |
| Mar 26, 2026 | New CVE Received | [email protected] |