Buffer overflow in D-Link Dir-645
CVE-2026-5815
A vulnerability was detected in D-Link DIR-645 1.01/1.02/1.03. Impacted is the function hedwigcgi_main of the file /cgi-bin/hedwig.cgi. The manipulation results in stack-based buffer overflow. The attack can be launched remotely. The exploit is now 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: 0.009 (59.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 59.3% 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: 0.009 · change: +0.002
Affected products
- D-Link Dir-645 — versions 1.01, 1.02, 1.03
Weakness classification (CWE)
References
- vuldb.com/vuln/356263 (technical-description, vdb-entry)
- vuldb.com/vuln/356263/cti (signature, permissions-required)
- vuldb.com/submit/788298 (third-party-advisory)
- github.com/Pers1st0/CVE/blob/main/stack-based buffer overflow vulnerability exi… (related)
- github.com/Pers1st0/CVE/blob/main/stack-based buffer overflow vulnerability exi… (exploit)
- www.dlink.com/ (product)
Frequently asked questions
- What is CVE-2026-5815?
- CVE-2026-5815 is a high-severity vulnerability in D-Link Dir-645, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.8/10. Published 2026-04-09.
- How severe is CVE-2026-5815?
- High severity. CVSS v3 base score is 8.8 out of 10.