CVE-2026-30802
Out-of-bounds read in RTI Connext Micro Core Libraries (v4.0.0–v4.2.x, before v4.3.0)
Is CVE-2026-30802 being exploited?
Not confirmed. CVE-2026-30802 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 0.25% probability of exploitation in the next 30 days.
How severe is CVE-2026-30802?
CVE-2026-30802 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-2026-30802?
Yes. A fix has been recorded for CVE-2026-30802. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-30802 affect?
CVE-2026-30802 affects RTI Connext Micro Core Libraries (v4.0.0–v4.2.x, before v4.3.0). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-30802?
Upgrade to Connext Micro 4.3.0+
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Buffer overread may leak memory data and crash Connext Micro-based apps
Patch when possible
- affected>= 4.0.0 and < 4.3.0
- affected>= 2.4.5 and < 2.4.*
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.