CVE-2026-82691
Remote OS command injection in D‑Link DNS‑320L/327L/340L/345 CGI leading to device takeover.
Is CVE-2026-82691 being exploited?
Not confirmed. CVE-2026-82691 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 2.1% probability of exploitation in the next 30 days.
How severe is CVE-2026-82691?
CVE-2026-82691 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-2026-82691?
Not known from our data. No patch reference has been recorded for CVE-2026-82691, 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-2026-82691 affect?
CVE-2026-82691 affects D-Link DNS-320L (<=2026-07-17), D-Link DNS-327L (<=2026-07-17), D-Link DNS-340L (<=2026-07-17), D-Link DNS-345 (<=2026-07-17), and 1 further product or version. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-82691?
Isolate devices, disable remote management/port forwarding, block /cgi-bin/usb_device.cgi, apply vendor firmware patch ASAP.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote OS command injection via CGI parameter f_ups_ip; allows arbitrary command execution, full device compromise and lateral movement.
Immediate action required
- affected20260717
- affected20260717
- affected20260717
- affected20260717
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.