CVE-2025-67186
Buffer overflow in TOTOLINK A950RG firewall, allows remote code execution or DoS.
Is CVE-2025-67186 being exploited?
Not confirmed. CVE-2025-67186 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 0.72% probability of exploitation in the next 30 days.
How severe is CVE-2025-67186?
CVE-2025-67186 is rated Critical with a CVSS score of 9.8. 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-2025-67186?
Not known from our data. No patch reference has been recorded for CVE-2025-67186, 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-2025-67186 affect?
CVE-2025-67186 affects TOTOLINK A950RG, Firmware V4.1.2cu.5204_B20210112. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2025-67186?
Update firmware when available; restrict remote management exposure.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote attacker can trigger overflow via crafted URL to gain arbitrary code execution or crash the device.
Immediate action required