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CVE-2026-123966

10, critical

Tenda AC19 Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab)
CVSS
10, critical critical CVSS v3.1
EPSS, next 30 days
n/a
Exploitation
No public evidence
Published
7 Nov 2026yesterday

Description

A vulnerability was determined in Tenda AC19 16.03.10.07. Affected by this issue is the function saveParentControlInfo of the file /goform/saveParentControlInfo. This manipulation of the argument deviceId causes heap-based buffer overflow. The attack is possible to be carried out remotely. The exploit has been publicly disclosed and may be utilized.

Details

Vendor
Tenda
Product
AC19
Weakness
CWE-119 (opens in a new tab)
Status
Deferred
Updated
7 Nov 2026
Assigner
cna@vuldb.com

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

References 6

Other references 6

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other Tenda CVEs

Every Tenda CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2021-31755 Tenda AC11 Router Stack Buffer Overflow Vulnerability KEV EPSS 87% 9.8, critical
  • CVE-2020-10987 Tenda AC1900 Router AC15 Model Remote Code Execution Vulnerability KEV EPSS 80% 9.8, critical
  • CVE-2018-14558 Tenda AC7, AC9, and AC10 Routers Command Injection Vulnerability KEV EPSS 9% 9.8, critical
  • CVE-2026-113744 Tenda AC19 Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability EPSS 0.6% 10, critical
  • CVE-2026-114268 Tenda BE3L Pro Improper Restriction of Operations within the Bounds of a Memory Buffer Vulnerability EPSS 0.5% 9.9, critical

Beyond this page

Is CVE-2026-123966 in your network?

This page tells you how dangerous CVE-2026-123966 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

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    Detect it if it's exploited

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 8 Nov 2026, not the live upstream state.