Buffer overflow in D-Link Dir-867
CVE-2025-6334
A vulnerability has been found in D-Link DIR-867 1.0 and classified as critical. This vulnerability affects the function strncpy of the component Query String Handler. The manipulation leads to stack-based buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. This vulnerability only affects products that are no longer supported by the maintainer.
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: 0.010 (59.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 59.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.010 · change: +0.002
Affected products
- D-Link Dir-867 — versions 1.0
- Dlink Dir-867
- Dlink Dir-867 Firmware — versions 1.0
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/Thir0th/Thir0th-CVE/blob/main/DIR-867 AC1750.md (Third Party Advisory, exploit, Issue Tracking)
- www.dlink.com/ (Product, product)
Frequently asked questions
- What is CVE-2025-6334?
- CVE-2025-6334 is a high-severity vulnerability in D-Link Dir-867, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2025-06-20.
- How severe is CVE-2025-6334?
- High severity. CVSS v3 base score is 8.8 out of 10.