CVE-2026-82688
Remote OS command injection in D-Link DNS-340L/DNS-345 CGI allows remote code execution.
Is CVE-2026-82688 being exploited?
Not confirmed. CVE-2026-82688 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 2.8% probability of exploitation in the next 30 days.
How severe is CVE-2026-82688?
CVE-2026-82688 is rated High with a CVSS score of 8.5. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-82688?
Not known from our data. No patch reference has been recorded for CVE-2026-82688, which is not the same as no patch existing — a fix may have shipped without a tagged reference, or after this record was written. The vendor advisory is the only authority on whether a fix exists, and mitigations may be available regardless.
What does CVE-2026-82688 affect?
CVE-2026-82688 affects D-Link DNS-340L, D-Link DNS-345, Firmware 1.01B04/1.03B06/1.04.B02/1.05b04. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-82688?
Isolate devices, disable remote management, block access, monitor logs; apply vendor firmware when released.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote OS command injection via CGI params (f_sharename/f_target/f_name) enabling remote code execution, full device compromise, data theft and lateral movement.
Immediate action required
- affected1.01B04
- affected1.03B06
- affected1.04.B02
- affected1.05b04
- affected1.01B04
- affected1.03B06
- affected1.04.B02
- affected1.05b04
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.