CVE-2023-54330
Remote code execution in Inbit Messenger via crafted packets
Is CVE-2023-54330 being exploited?
Not confirmed. CVE-2023-54330 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 0.79% probability of exploitation in the next 30 days.
How severe is CVE-2023-54330?
CVE-2023-54330 is rated Critical with a CVSS score of 9.3. 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-2023-54330?
Not known from our data. No patch reference has been recorded for CVE-2023-54330, 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-2023-54330 affect?
CVE-2023-54330 affects Inbit Messenger 4.6.0-4.9.0 on Windows. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2023-54330?
Patch when available; isolate affected hosts
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated RCE via crafted network packets; overwrites SEH to run shellcode on Windows.
Immediate action required
- affected>= 4.6.0 and <= 4.9.0
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.