Buffer overflow in Tenda W12
CVE-2026-10191
A vulnerability was determined in Tenda W12 3.0.0.7(4763). Impacted is the function cgiWifiMacFilterSet of the file /bin/httpd. This manipulation of the argument wifiMacFilterSet.macList.mac causes stack-based buffer overflow. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized.
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: 0.005 (38.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 38.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Tenda W12 — versions 3.0.0.7(4763)
Weakness classification (CWE)
References
- vuldb.com/vuln/367472 (technical-description, vdb-entry)
- vuldb.com/vuln/367472/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-10191 (third-party-advisory)
- vuldb.com/submit/820023 (third-party-advisory)
- cdn2.v50to.cc/cgiWifiMacFilterSet_overflow.zip (exploit)
- www.tenda.com.cn/ (product)
Frequently asked questions
- What is CVE-2026-10191?
- CVE-2026-10191 is a high-severity vulnerability in Tenda W12, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2026-05-31.
- How severe is CVE-2026-10191?
- High severity. CVSS v3 base score is 8.8 out of 10.