CVE-2026-12927
Out-of-bounds write in IGSS Definition via crafted CGF import
Is CVE-2026-12927 being exploited?
Not confirmed. CVE-2026-12927 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 0.16% probability of exploitation in the next 30 days.
How severe is CVE-2026-12927?
CVE-2026-12927 is rated High with a CVSS score of 8.4. 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-2026-12927?
Not known from our data. No patch reference has been recorded for CVE-2026-12927, 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-2026-12927 affect?
CVE-2026-12927 affects IGSS Definition (CGF import), CGF file parser/loader. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-12927?
Block/untrusted CGF imports, restrict import rights, scan files, apply vendor patch when released
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Crafted CGF file import can cause OOB write leading to data loss or arbitrary code execution as the IGSS process user.
Immediate action required
- affectedVersion 18.0.0.26124 and prior
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.