D-Link DNS-320L/DNS-327L/DNS-340L/DNS-345 up to 20260717 ISO Image isomount_mgr.cgi upIsoRootPath os command injection

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.0$0-$5k0.29+

Summaryinfo

A vulnerability marked as very critical has been reported in D-Link DNS-320L, DNS-327L, DNS-340L and DNS-345 up to 20260717. Affected by this vulnerability is an unknown functionality of the file /cgi-bin/isomount_mgr.cgi of the component ISO Image Handler. This manipulation of the argument upIsoRootPath causes os command injection. This vulnerability is tracked as CVE-2026-82689. The attack is possible to be carried out remotely. Moreover, an exploit is present.

Detailsinfo

A vulnerability was found in D-Link DNS-320L, DNS-327L, DNS-340L and DNS-345 up to 20260717. It has been declared as very critical. Affected by this vulnerability is an unknown code of the file /cgi-bin/isomount_mgr.cgi of the component ISO Image Handler. The manipulation of the argument upIsoRootPath with an unknown input leads to a os command injection vulnerability. The CWE definition for the vulnerability is CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-82689. The exploitation appears to be easy. The attack can be launched remotely. Technical details and also a public exploit are known. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/30/2026). MITRE ATT&CK project uses the attack technique T1202 for this issue.

It is possible to download the exploit at github.com. It is declared as proof-of-concept.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.9
VulDB Meta Temp Score: 9.0

VulDB Base Score: 9.9
VulDB Temp Score: 9.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Os command injection
CWE: CWE-78 / CWE-77 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

08/30/2026 Advisory disclosed
08/30/2026 +0 days VulDB entry created
08/30/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: dlink.com

Advisory: github.com
Status: Not defined

CVE: CVE-2026-82689 (🔒)
GCVE (CVE): GCVE-0-2026-82689
GCVE (VulDB): GCVE-100-397177
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 08/30/2026 19:40
Changes: 08/30/2026 19:40 (56)
Complete: 🔍
Submitter: ST4R0001
Cache ID: 216::103

Submitinfo

Accepted

  • Submit #894201: D-Link DNS-320L/DNS-327L/DNS-340L/DNS-345 ShareCenter NAS family multiple confirmed ShareCenter firmware builds OS Command Injection (by ST4R0001)

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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