Critical severity · published Jan 26, 2026
CVE-2026-1420
Tenda AC23 WifiExtraSet buffer overflow
9.8
CVSS
3.8%
EPSS
No
On KEV
Description
A flaw has been found in Tenda AC23 16.03.07.52. This impacts an unknown function of the file /goform/WifiExtraSet. This manipulation of the argument wpapsk_crypto causes buffer overflow. Remote exploitation of the attack is possible. The exploit has been published and may be used.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.8% · higher than 90% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AC
AC23 · Tenda
16.03.07.52 · source: vendor
AF
Ac23 Firmware · Tenda
16.03.07.52 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-1420
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-1420
Exploit
https://github.com/xyh4ck/iot_poc/blob/main/Tenda%20AC23_Buffer_Overflow_WifiExtraSet/Tenda%20AC23_Buffer_Overflow_WifiExtraSet.md
Exploit
https://github.com/xyh4ck/iot_poc/blob/main/Tenda%20AC23_Buffer_Overflow_WifiExtraSet/Tenda%20AC23_Buffer_Overflow_WifiExtraSet.md#poc
Permissions Required
https://vuldb.com/?ctiid.342836
Third Party Advisory
https://vuldb.com/?id.342836
Third Party Advisory
https://vuldb.com/?submit.736559
Product
https://www.tenda.com.cn/
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