CVE-2025-12596CWE-119CWE-120

CVE-2025-12596

High · published November 2, 2025

CVSS v3.1
8.8
EPSS
1%
Percentile
68.2
In the wild
Unconfirmed
What it is

⚡ A single argument tweak in the Tenda AC23 can unleash a buffer overflow remotely! This means attackers could manipulate settings with just the right input. 🔥 Think of it like a food truck that serves a variety of dishes. If the staff forgets to check portion sizes, a small change in the recipe could overflow the serving area, creating a mess and potentially harming customers. Here, the overflow can mess with the device's operations and security! An attacker could exploit this vulnerability to execute arbitrary code, which could lead to a complete takeover of the device. This means they could modify configurations, access sensitive data, or even hijack your network, putting your entire home network at risk.

Put simply

Think of it like a food truck that serves a variety of dishes. If the staff forgets to check portion sizes, a small change in the recipe could overflow the serving area, creating a mess and potentially harming customers. Here, the overflow can mess with the device's operations and security! This vulnerability exists in the `saveParentControlInfo` function of the Tenda AC23 router. By manipulating the `Time` argument, an attacker can trigger a buffer overflow, allowing them to run malicious code on the device remotely.

What to do

An attacker could exploit this vulnerability to execute arbitrary code, which could lead to a complete takeover of the device. This means they could modify configurations, access sensitive data, or even hijack your network, putting your entire home network at risk. Update the Tenda AC23 router firmware to the latest version (16.03.07.53 or above) immediately to close this vulnerability. Regularly check for firmware updates and consider disabling remote management to enhance security. This is fixable! Get that firmware updated and you’ll be well on your way to securing your network. 🛡️

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01210 · 68.2th percentile
Weaknesses
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer; CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Published
2025-11-02T16:15Z
Affected products (1)
ProductVersionsFixed in
tenda/ac23_firmwareall versions—
References (6)
EPSS history
Timeline
  • 02 NOV 10:32Z
    Tenda AC23 saveParentControlInfo buffer overflow
    cvelistv5