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TI-2026-86593 Aliases CVE-2026-123966GHSA-w69v-2wp6-xxjp

Heap-based buffer overflow in Tenda AC19 parent control function

Priority MEDIUM 58CWE-119Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-119 and the CVSS impact.

Summary

Tenda AC19 version 16.03.10.07 contains a heap-based buffer overflow (CWE-122) in the saveParentControlInfo function. Manipulating the deviceId argument overflows a heap buffer. A remote attacker can trigger it without authentication or user interaction, and a public exploit has been disclosed.

Written with Claude Haiku 5.5 from the sources below · 2026-11-07

Description from the CNA

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.

Why it matters now

Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
TendaAC1916.03.10.07—No fix listedCNA
  • AC19 VendorTenda Affected 16.03.10.07 Fixed in — No fix listed CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:h:tenda:ac19:*:*:*:*:*:*:*:*——Tenda
  • cpe:2.3:h:tenda:ac19:*:*:*:*:*:*:*:* Versions — — ·Tenda

Remediation

The sources list no fixed version for Tenda AC19.

Written with Claude Haiku 5.5 from the sources below · 2026-11-07

Timeline

  1. 2026-11-07 Threatist record created from CVE-2026-123966
  2. 2026-11-07 Alias added: GHSA-w69v-2wp6-xxjp

References

Exploit 1

Other 1

  • TI-2021-11772 An issue was discovered on Tenda AC11 devices with firmware through 02.03.01.104_CN. KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-08863 The goform/setUsbUnload endpoint of Tenda AC15 AC1900 version 15.03.05.19 allows remote… KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-10434 An issue was discovered on Tenda AC7 devices with firmware through V15.03.06.44_CN(AC7)… KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-78650 Stack-based buffer overflow in Tenda AC19 web management service CVSS 4.0CRITICAL 10.0
  • TI-2026-66119 Tenda HG7/HG9/HG10 Boa Web Server formLoopBack boaGetVar stack-based overflow CVSS 4.0CRITICAL 10.0
  • TI-2026-57025 Tenda AC18 Telnet telnet missing authentication CVSS 4.0CRITICAL 10.0
See all 1963 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences