CVE-2025-56422
Remote code execution via deserialization in LimeSurvey before v6.15.0+250623.
Is CVE-2025-56422 being exploited?
Not confirmed. CVE-2025-56422 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 0.85% probability of exploitation in the next 30 days.
How severe is CVE-2025-56422?
CVE-2025-56422 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-2025-56422?
Yes. A fix has been recorded for CVE-2025-56422. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2025-56422 affect?
CVE-2025-56422 affects LimeSurvey <=6.14.x. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2025-56422?
Update LimeSurvey to 6.15.0+250623 or later
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution on the LimeSurvey server via crafted serialized input leading to full compromise.
Immediate action required