Remote code execution in a core Windows component (WIA) affects broad Windows installs and can lead to widespread system compromise and disruption.
CVE-2026-83523
Heap overflow in Windows Image Acquisition allows remote code execution.
Is CVE-2026-83523 being exploited?
Not confirmed. CVE-2026-83523 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.
How severe is CVE-2026-83523?
CVE-2026-83523 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-2026-83523?
Yes. A fix has been recorded for CVE-2026-83523. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-83523 affect?
CVE-2026-83523 affects Microsoft Windows (Windows Image Acquisition - WIA), Windows desktop and server editions with WIA enabled. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-83523?
Install Microsoft's security update immediately; disable/block WIA if not required.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote arbitrary code execution via heap-based buffer overflow in Windows Image Acquisition over network, allowing system compromise.
Immediate action required
- affected>= 10.0.26100.0 and < 10.0.26100.9711
- affected>= 10.0.26200.0 and < 10.0.26200.9711
- affected>= 10.0.28000.0 and < 10.0.28000.3231
- affected>= 10.0.26300.0 and < 10.0.26300.9711
- affected>= 10.0.26100.0 and < 10.0.26100.33650
- affected>= 10.0.26100.0 and < 10.0.26100.33650
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.