CVSS 3.1
7.0 highCVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:HCVE-2026-100204 HEIF Image Extensions Remote Code Execution Vulnerability
High (7.0) in microsoft heif image extension. EPSS 0.5% estimated probability of exploitation activity in the next 30 days.
Use after free in HEIF Image Extensions allows an unauthorized attacker to execute code locally.
Severity
- EPSS
- 0.5% estimated probability of exploitation activity in the next 30 days; 42nd percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
- CISA's assessment (SSVC)
- Exploitation: none · Automatable: no · Technical impact: total, assessed 2026-11-10. From CISA's Vulnrichment in the CVE List: whether it is exploited, whether exploiting it can be automated, and how much control it gives.
- CWE
- CWE-416 Use After Free
- Published
- Modified
- Assigned by
- microsoft (CNA)
- NVD analysis
- Awaiting analysis
- Record from
- the NVD, synced
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Affected
- microsoft:heif image extension
Versions
From the CNA's record in the CVE List.
| Product | Affected |
|---|---|
| Microsoft HEIF Image Extension | from 1.0.0.0 before 1.2.62.0 |