High severity · published Apr 8, 2026
CVE-2026-5815
D-Link DIR-645 hedwig.cgi hedwigcgi_main stack-based overflow
8.8
CVSS
0.7%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 52% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DI
DIR-645 · D-Link
1.01; 1.02; 1.03 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-5815
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-5815
github.com
https://github.com/Pers1st0/CVE/blob/main/stack-based%20buffer%20overflow%20vulnerability%20exists%20in%20the%20hedwig.cgi%20of%20D-Link%20DIR-645.md
github.com
https://github.com/Pers1st0/CVE/blob/main/stack-based%20buffer%20overflow%20vulnerability%20exists%20in%20the%20hedwig.cgi%20of%20D-Link%20DIR-645.md#poc
vuldb.com
https://vuldb.com/submit/788298
vuldb.com
https://vuldb.com/vuln/356263
vuldb.com
https://vuldb.com/vuln/356263/cti
www.dlink.com
https://www.dlink.com/
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