CVE-2025-71056
Session hijack via IP spoofing on GCOM EPON 1GE ONU firmware.
Is CVE-2025-71056 being exploited?
Not confirmed. CVE-2025-71056 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 0.21% probability of exploitation in the next 30 days.
How severe is CVE-2025-71056?
CVE-2025-71056 is rated Critical with a CVSS score of 9.1. 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-2025-71056?
Not known from our data. No patch reference has been recorded for CVE-2025-71056, 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-2025-71056 affect?
CVE-2025-71056 affects GCOM EPON 1GE ONU firmware C00R371V00B01. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2025-71056?
Patch when available; restrict WAN management IPs; monitor for spoofing attempts.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Hijack an authenticated session via IP spoofing; could allow device control or config changes.
Immediate action required