Buffer overflow in Tenda Hg10
CVE-2026-11553
A vulnerability was found in Tenda HG7, HG9 and HG10 300001138_en_xpon. This affects the function formPPPEdit of the file /boaform/formPPPEdit. The manipulation of the argument encodename results in stack-based buffer overflow. The attack can be launched remotely. The exploit has been made public and could 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: 0.005 (40.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 40.3% 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 Hg10 — versions 300001138_en_xpon
- Tenda Hg7hg9 — versions 300001138_en_xpon
- Tenda Hg9 — versions 300001138_en_xpon
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/xiezhihua-1127/Tenda-Stack-Overflow.git (related)
- github.com/xiezhihua-1127/Tenda-Stack-Overflow/blob/main/report.md (exploit)
- vuldb.com/cve/CVE-2026-11553 (third-party-advisory)
- vuldb.com/submit/836778 (third-party-advisory)
- vuldb.com/vuln/369163 (technical-description, vdb-entry)
- vuldb.com/vuln/369163/cti (signature, permissions-required)
- www.tenda.com.cn/ (product)
Frequently asked questions
- What is CVE-2026-11553?
- CVE-2026-11553 is a high-severity vulnerability in Tenda Hg10, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2026-06-08.
- How severe is CVE-2026-11553?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2026-11553 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.