CVE-2026-4974
Tenda AC7 POST Request SetSysTimeCfg fromSetSysTime memory corruption
Description
A flaw has been found in Tenda AC7 15.03.06.44. Affected by this issue is the function fromSetSysTime of the file /goform/SetSysTimeCfg of the component POST Request Handler. Executing a manipulation of the argument Time can lead to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been published and may be used.
INFO
Published Date :
March 27, 2026, 8:16 p.m.
Last Modified :
March 30, 2026, 7:33 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update the Tenda AC7 firmware.
- Apply vendor-released patches or updates.
- Restrict access to the affected configuration endpoint.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-4974.
| URL | Resource |
|---|---|
| https://lavender-bicycle-a5a.notion.site/Tenda-AC7-fromSetSysTime-32153a41781f801c95b0f8a53eaa9a1f?source=copy_link | Exploit Third Party Advisory |
| https://vuldb.com/?ctiid.353861 | Permissions Required VDB Entry |
| https://vuldb.com/?id.353861 | Third Party Advisory VDB Entry |
| https://vuldb.com/?submit.778207 | Third Party Advisory VDB Entry |
| https://www.tenda.com.cn/ | Product |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-4974 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-4974
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-4974 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-4974 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Mar. 30, 2026
Action Type Old Value New Value Added CWE CWE-787 Added CPE Configuration AND OR *cpe:2.3:o:tenda:ac7_firmware:15.03.06.44:*:*:*:*:*:*:* OR cpe:2.3:h:tenda:ac7:1.0:*:*:*:*:*:*:* Added Reference Type VulDB: https://lavender-bicycle-a5a.notion.site/Tenda-AC7-fromSetSysTime-32153a41781f801c95b0f8a53eaa9a1f?source=copy_link Types: Exploit, Third Party Advisory Added Reference Type VulDB: https://vuldb.com/?ctiid.353861 Types: Permissions Required, VDB Entry Added Reference Type VulDB: https://vuldb.com/?id.353861 Types: Third Party Advisory, VDB Entry Added Reference Type VulDB: https://vuldb.com/?submit.778207 Types: Third Party Advisory, VDB Entry Added Reference Type VulDB: https://www.tenda.com.cn/ Types: Product -
New CVE Received by [email protected]
Mar. 27, 2026
Action Type Old Value New Value Added Description A flaw has been found in Tenda AC7 15.03.06.44. Affected by this issue is the function fromSetSysTime of the file /goform/SetSysTimeCfg of the component POST Request Handler. Executing a manipulation of the argument Time can lead to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been published and may be used. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Added CVSS V2 (AV:N/AC:L/Au:S/C:C/I:C/A:C) Added CWE CWE-119 Added CWE CWE-121 Added Reference https://lavender-bicycle-a5a.notion.site/Tenda-AC7-fromSetSysTime-32153a41781f801c95b0f8a53eaa9a1f?source=copy_link Added Reference https://vuldb.com/?ctiid.353861 Added Reference https://vuldb.com/?id.353861 Added Reference https://vuldb.com/?submit.778207 Added Reference https://www.tenda.com.cn/