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No exploitation reported

CVE-2026-123966

Tenda AC19 saveParentControlInfo heap-based overflow

No exploitation reported by the sources we read.

  • Published2026-11-07
  • WeaknessCWE-119 · CWE-122

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2026-11-0713:45CVE publishedCNA

Versions per branch

Products declared by the CNA

As VulDB, the CNA that assigned this CVE, declared them in the CVE record; versions as written. NVD lists no product for this CVE yet: this is the only product data so far.

  • Tenda AC19
    Affected
    • = 16.03.10.07no fix stated

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-11-07

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-123966 yet.

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Metasploit modules
none listed
Metasploit Framework

Sources

  • CNACVSS 4.0102026-11-07
  • CNACVSS 3.1102026-11-07
  • NVDCVSS 3.110read 2026-11-07
  • CNACVSS 3.0102026-11-07
  • CNACVSS 2.0102026-11-07
  • CNAweakness (CWE)CWE-119, CWE-1222026-11-07
  • NVDweakness (CWE)CWE-119, CWE-122read 2026-11-07

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CVSS 4.0 vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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
Published
2026-11-07
Last Modified
2026-11-07
NVD status
Deferred

Frequently asked questions

What is CVE-2026-123966?

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.

Is CVE-2026-123966 actively exploited?

Active exploitation of CVE-2026-123966 has not been confirmed.

What is the CVSS score for CVE-2026-123966?

CVE-2026-123966 has a CVSS v3 base score of 10 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

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