Widely deployed UniFi Network Application; path traversal could lead to local file disclosure and potential account compromise.
CVE-2026-22557
Path traversal in UniFi Network Application could read local files.
Is CVE-2026-22557 being exploited?
Not confirmed. CVE-2026-22557 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 28% probability of exploitation in the next 30 days.
How severe is CVE-2026-22557?
CVE-2026-22557 is rated Critical with a CVSS score of 10.0. 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-2026-22557?
Not known from our data. No patch reference has been recorded for CVE-2026-22557, 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-2026-22557 affect?
CVE-2026-22557 affects UniFi Network Application. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-22557?
Patch when released; isolate controller; restrict access.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Path traversal over the network allows reading arbitrary local files on the UniFi controller, potentially exposing credentials and enabling account compromise.
Immediate action required
- affected< 10.1.89
- affected< 10.2.97
- affected< 9.0.118
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.