CVE-2026-123966
Tenda AC19 saveParentControlInfo heap-based overflow
- Critical 10.0
- A public exploit reference is listed
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.
Key facts
- Published
- 7 Nov 2026
- Last changed
- 9 Nov 2026
- Assigned by
- VulDB
- EPSS
- 1.021% likely to be exploited in the next 30 days, higher than 63.98% of CVEs (scores for 15 Nov 2026)
- SSVC (CISA)
- Exploitation: poc; Automatable: yes; Technical impact: total
Severity scores
Each score is shown as its source gave it. They are not averaged or merged.
- 10.0CVSS 4.0, Criticalfrom the CNA (VulDB)
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 - 10.0CVSS 3.1, Criticalfrom the CNA (VulDB)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:C - 10.0CVSS 3.0, Criticalfrom the CNA (VulDB)
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:X/RC:C - 10.0CVSS 2.0, Highfrom the CNA (VulDB)
AV:N/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:ND/RC:C
Historical context and remediation
This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.
No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.
No explicit remediation statement is available on this page yet. Consult the original record and vendor references before choosing a fix.
Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Tenda | AC19 |
|
Timeline
- 6 Nov 2026 Advisory disclosed
- 6 Nov 2026 VulDB entry created
- 6 Nov 2026 VulDB entry last update
- 7 Nov 2026 Published