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 exploit has been published and may be used.
Vulnerability class: Buffer Overflow
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.039 (89.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 89.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.036 · newest: 0.039 · change: +0.003
Affected products
- Tenda Ac23 — versions 16.03.07.52
- Tenda Ac23 Firmware — versions 16.03.07.52
Weakness classification (CWE)
References
- vuldb.com/ (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/ (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/ (VDB Entry, Third Party Advisory, third-party-advisory)
- github.com/xyh4ck/iot_poc/blob/main/Tenda AC23_Buffer_Overflow_WifiExtraSet/Ten… (Exploit, Third Party Advisory, exploit, broken-link)
- github.com/xyh4ck/iot_poc/blob/main/Tenda AC23_Buffer_Overflow_WifiExtraSet/Ten… (Exploit, exploit)
- www.tenda.com.cn/ (Product, product)
Frequently asked questions
- What is CVE-2026-1420?
- CVE-2026-1420 is a high-severity vulnerability in Tenda Ac23, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. 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.