CVE-2026-82689Public exploitNetwork attack vectorHinoki check available

Remote command execution via unescaped ISO root path

Published Aug 31, 2026 · Updated Aug 31, 2026

OS command injection in D-Link DNS-320L, DNS-327L, DNS-340L, and DNS-345 allows remote attackers to execute arbitrary commands. The /cgi-bin/isomount_mgr.cgi ISO Image Handler places the upIsoRootPath request value into an OS command without neutralizing shell metacharacters. The public record confirms network reachability and a proof of concept, but does not state the authentication requirement or CGI process privileges.

CVSS severityUnavailable
Unscored
EPSS probability2.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

OS command injection in D-Link DNS-320L, DNS-327L, DNS-340L, and DNS-345 allows remote attackers to execute arbitrary commands. The /cgi-bin/isomount_mgr.cgi ISO Image Handler places the upIsoRootPath request value into an OS command without neutralizing shell metacharacters. The public record confirms network reachability and a proof of concept, but does not state the authentication requirement or CGI process privileges.

The record

CVE
CVE-2026-82689
Published
Aug 31, 2026
Updated
Aug 31, 2026
Vendor
D-Link
Product
DNS-320L
Classifications
CWE-78, T1059
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Aug 31, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 31, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=20260717

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

D-Link · DNS-320Lversion=20260717
D-Link · DNS-340Lversion=20260717
D-Link · DNS-345version=20260717
D-Link · DNS-327Lversion=20260717

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059Command and Scripting Interpreter

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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