Buffer overflow in Tenda Ac23
CVE-2026-1420
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…
Vulnerability class: Buffer Overflow
EPSS: 0.001 (17.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R.
Affected products
- Tenda Ac23 — versions 16.03.07.52
Weakness classification (CWE)
References
- VDB-342836 | Tenda AC23 WifiExtraSet buffer overflow (vdb-entry, technical-description)
- VDB-342836 | CTI Indicators (IOB, IOC, IOA) (signature, permissions-required)
- Submit #736559 | Tenda AC23 V16.03.07.52 Buffer Overflow (third-party-advisory)
- github.com/xyh4ck/iot_poc/blob/main/Tenda AC23_Buffer_Overflow_WifiExtraSet/Ten… (broken-link, exploit)
- github.com/xyh4ck/iot_poc/blob/main/Tenda AC23_Buffer_Overflow_WifiExtraSet/Ten… (exploit)
- www.tenda.com.cn/ (product)
Frequently asked questions
- What is CVE-2026-1420?
- CVE-2026-1420 is a high-severity vulnerability in Tenda Ac23, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.8/10. Published 2026-01-26.
- How severe is CVE-2026-1420?
- High severity. CVSS v3 base score is 8.8 out of 10.