Vulnerability details

CVE-2026-123966

Tenda AC19

Tenda AC19 saveParentControlInfo heap-based overflow

CVSS 4.0

10.0Critical

Official 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.

CVSS scores

Score	Version	Source	Vector
10.0Critical	4.0	CVEProject cvelistV5 (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`
10.0Critical	3.1	CVEProject cvelistV5 (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`
10.0Critical	3.0	CVEProject cvelistV5 (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`
10.0High	2.0	CVEProject cvelistV5 (CNA) (VulDB)	`AV:N/AC:L/Au:N/C:C/I:C/A:C/E:POC/RL:ND/RC:C`

Affected products

Vendor	Product	Versions	Source
Tenda	AC19	16.03.10.07	CVEProject cvelistV5 (CNA)

References and advisories

https://vuldb.com/vuln/432038 vdb-entrytechnical-description
https://vuldb.com/vuln/432038/cti signaturepermissions-required
https://vuldb.com/cve/CVE-2026-123966 third-party-advisory
https://vuldb.com/submit/1035173 third-party-advisory
https://github.com/Tmzop/Tenda-AC19-saveParentControlInfo/blob/main/report.md exploit
https://www.tenda.com.cn/ product

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Details

Published: 2026-11-07
Last updated: 2026-11-10
State: Published
Assigner (CNA): VulDB
Kolun priority: 41 · Medium

Exploit prediction (EPSS)

1.02%

Probability of exploitation in 30 days

63.6%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: Yes
Exploitation: Proof of concept
Technical impact: Total

Weaknesses (CWE)

CWE-122
Heap-based Buffer Overflow
CWE-119
Memory Corruption