Tenda AC7 SetRebootTimer formSetRebootTimer stack-based overflow

published 2025-05-16 17 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-15547

cvss: 8.8; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 1.1%; EPSS 1.1% chance of exploitation in 30 days, percentile 66%
public exploits: 0; none known

A vulnerability was found in Tenda AC7 15.03.06.44. It has been declared as critical. Affected by this vulnerability is the function formSetRebootTimer of the file /goform/SetRebootTimer. The manipulation of the argument reboot_time leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: total
Assessed: 17 mo ago (2025-05-17)

Exploit prediction

1.11% chance of exploitation in the next 30 days, higher than 66% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

lavender-bicycle-a5a.notion.site https://lavender-bicycle-a5a.notion.site/Tenda-AC7-formSetRebootTimer-1ed53a41781f80f78851c1c9dfc4f216?pvs=4 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	4.0	8.7	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CNA	3.1	8.8	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA	3.0	8.8	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA	2.0	9.0	AV:N/AC:L/Au:S/C:C/I:C/A:C
CNA	4.0	8.7	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/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

Affected products

Tenda AC7

Classification

Weakness

CWE-121 Stack-based Buffer Overflow
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-787 Out-of-bounds Write

References

lavender-bicycle-a5a.notion.site /Tenda-AC7-formSetRebootTimer-1ed53a41781f80f78851c1c9dfc4f216?pvs=4
exploit, third-party-advisory
vuldb.com /?id.309265
vdb-entry, technical-description, third-party-advisory
vuldb.com /?ctiid.309265
signature, permissions-required, vdb-entry
vuldb.com /?submit.573643
third-party-advisory, vdb-entry
tenda.com.cn /
product

Sources

CVE List CVE-2025-4810
NVD CVE-2025-4810

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary