CVE-2026-42084
Password change bypass via a valid session token enables persistence and admin access.
Is CVE-2026-42084 being exploited?
Not confirmed. CVE-2026-42084 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 0.30% probability of exploitation in the next 30 days.
How severe is CVE-2026-42084?
CVE-2026-42084 is rated High with a CVSS score of 8.1. 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-2026-42084?
Yes. A fix has been recorded for CVE-2026-42084. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-42084 affect?
CVE-2026-42084 affects OpenC3 COSMOS platform (versions <6.10.5, <7.0.0-rc3). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-42084?
Upgrade to 6.10.5 or 7.0.0-rc3
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Attacker with a valid session token can change the password without the old password, gaining persistence and possible admin access.
Immediate action required
- affected< 6.10.5
- affected>= 7.0.0.pre.rc1 and < 7.0.0-rc3
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.