CVE-2026-44963
Authenticated domain user RCE on Backup Server.
Is CVE-2026-44963 being exploited?
Not confirmed. CVE-2026-44963 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 2.4% probability of exploitation in the next 30 days.
How severe is CVE-2026-44963?
CVE-2026-44963 is rated Critical with a CVSS score of 9.4. 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-2026-44963?
Not known from our data. No patch reference has been recorded for CVE-2026-44963, 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 should I do about CVE-2026-44963?
Patch ASAP; restrict backup server access; review credentials.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
RCE via Backup Server; authenticated attacker can run arbitrary code and take control.
Immediate action required
- affected< 12.3.2
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.