Critical severity · published Aug 31, 2026
CVE-2026-82689
D-Link DNS-320L/DNS-327L/DNS-340L/DNS-345 ISO Image isomount_mgr.cgi os command injection
9.9
CVSS
3.3%
EPSS
No
On KEV
Description
A vulnerability was detected in D-Link DNS-320L, DNS-327L, DNS-340L and DNS-345 up to 20260717. Affected is an unknown function of the file /cgi-bin/isomount_mgr.cgi of the component ISO Image Handler. The manipulation of the argument upIsoRootPath results in os command injection. The attack can be executed remotely. The exploit is now public and may be used.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)3.3% · higher than 88% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DN
DNS-320L · D-Link
20260717 · source: vendor
DN
DNS-327L · D-Link
20260717 · source: vendor
DN
DNS-340L · D-Link
20260717 · source: vendor
DN
DNS-345 · D-Link
20260717 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-82689
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-82689
github.com
https://github.com/dxz0069/WAVLINK-WN530H4-Command-Injection-in-set_add_routing/blob/main/DLINK-CMD-003-vulndb.md
vuldb.com
https://vuldb.com/cve/CVE-2026-82689
vuldb.com
https://vuldb.com/submit/894201
vuldb.com
https://vuldb.com/vuln/397177
vuldb.com
https://vuldb.com/vuln/397177/cti
www.dlink.com
https://www.dlink.com/
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