CVE-2025-44089
RCE in NCH ExpressZip v11.29 via crafted archive execution
Is CVE-2025-44089 being exploited?
Not confirmed. CVE-2025-44089 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 0.29% probability of exploitation in the next 30 days.
How severe is CVE-2025-44089?
CVE-2025-44089 is rated High with a CVSS score of 8.8. 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-2025-44089?
Not known from our data. No patch reference has been recorded for CVE-2025-44089, 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-2025-44089 affect?
CVE-2025-44089 affects NCH Software ExpressZip v11.29, Windows desktops with ExpressZip installed. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2025-44089?
Block/uninstall ExpressZip, restrict archive handling, and apply vendor patch when released.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Arbitrary code execution if a user downloads and opens a crafted archive, allowing attackers to run code at the user's privilege and potentially compromise the system.
Immediate action required