CVE-2026-73564
Unauthenticated remote request crashes frp server, dropping all tunnels.
Is CVE-2026-73564 being exploited?
Not confirmed. CVE-2026-73564 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 0.38% probability of exploitation in the next 30 days.
How severe is CVE-2026-73564?
CVE-2026-73564 is rated High with a CVSS score of 8.7. 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-2026-73564?
Yes. A fix has been recorded for CVE-2026-73564. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-73564 affect?
CVE-2026-73564 affects frp (frps) versions 0.53.0 through 0.70.0 (SSH Tunnel Gateway). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-73564?
Upgrade frp to >= 0.70.1 and restrict SSH Tunnel Gateway exposure; enforce auth.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated remote attacker can send a crafted SSH exec request that triggers a panic, crashing frps and causing all tunnels to drop (Denial of Service).
Immediate action required
- affected>= 0.53.0 and < 0.70.1
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.