CVE-2026-0640 Details
Description
A weakness has been identified in Tenda AC23 16.03.07.52. This affects the function sscanf of the file /goform/PowerSaveSet. Executing a manipulation of the argument Time can lead to buffer overflow. The attack can be launched remotely. The exploit has been made available to the public and could be used for attacks.
A buffer overflow vulnerability has been identified in the Tenda AC23 router, specifically in the firmware version 16.03.07.52. The issue arises in the '/goform/PowerSaveSet' endpoint, where the 'time' parameter can be manipulated to cause a buffer overflow. This vulnerability can be exploited remotely, and public proof-of-concept exploits are 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 Jan 6, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/xyh4ck/iot_poc/blob/main/Tenda%20AC23_Buffer_Overflow/Tenda%20AC23_Buffer_Overflow.md | [email protected] | ExploitThird Party Advisory |
| https://github.com/xyh4ck/iot_poc/blob/main/Tenda%20AC23_Buffer_Overflow/Tenda%20AC23_Buffer_Overflow.md#poc | [email protected] | ExploitThird Party Advisory |
| https://vuldb.com/?ctiid.339683 | [email protected] | Permissions RequiredVDB Entry |
| https://vuldb.com/?id.339683 | [email protected] | Third Party AdvisoryVDB Entry |
| https://vuldb.com/?submit.731772 | [email protected] | Third Party AdvisoryVDB Entry |
| https://www.tenda.com.cn/ | [email protected] | Product |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-120 | Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') | [email protected] |
| CWE-119 | Improper Restriction of Operations within the Bounds of a Memory Buffer | [email protected] |
| CWE-120 | Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| tenda ac23 firmware | 16.03.07.52 |
CPE
Remediation
| |
| tenda ac23 | All versions |
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 |
| Jan 15, 2026 | Initial Analysis | [email protected] |
| Jan 6, 2026 | New CVE Received | [email protected] |