Buffer overflow in D-Link Di-8100
CVE-2026-7851
A vulnerability was identified in D-Link DI-8100 16.07.26A1. This affects the function sprintf of the file yyxz.asp. The manipulation of the argument ID leads to stack-based buffer overflow. The attack is possible to be carried out remotely. The exploit is publicly available and might be used.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.041 (90.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 90.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.041 · change: +0.028
Affected products
- D-Link Di-8100 — versions 16.07.26A1
- Dlink Di-8100
- Dlink Di-8100 Firmware — versions 16.07.26a1
Weakness classification (CWE)
References
- vuldb.com/vuln/361128 (technical-description, VDB Entry, Third Party Advisory, vdb-entry)
- vuldb.com/vuln/361128/cti (signature, Permissions Required, permissions-required, VDB Entry)
- vuldb.com/submit/807798 (VDB Entry, Third Party Advisory, third-party-advisory)
- github.com/draw-ctf/report/blob/main/DI-8100/yyxz_dlink_asp_overflow.md (Exploit, Third Party Advisory, exploit)
- www.dlink.com/ (Product, product)
Frequently asked questions
- What is CVE-2026-7851?
- CVE-2026-7851 is a high-severity vulnerability in D-Link Di-8100, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.2/10. Published 2026-05-05.
- How severe is CVE-2026-7851?
- High severity. CVSS v3 base score is 7.2 out of 10.