CVE-2026-100204
HEIF Image Extensions Remote Code Execution Vulnerability
Use after free in HEIF Image Extensions allows an unauthorized attacker to execute code locally.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- High
- Privileges needed
- None
- User interaction
- Required
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
HEIF Image Extensions Remote Code Execution Vulnerability
Use after free in HEIF Image Extensions allows an unauthorized attacker to execute code locally.
- Record
CVE-2026-100204- CVSS 3.1
- 7.0 High
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C - Weakness
- CWE-416
- Updated
- 2026-11-10
EUVDEUVD-2026-121721
Use after free in HEIF Image Extensions allows an unauthorized attacker to execute code locally.
- Record
EUVD-2026-121721- CVSS 3.1
- 7.0 High
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C - Updated
- 2026-11-10
GitHub AdvisoriesGHSA-wq58-gp4p-hwh6
Use after free in HEIF Image Extensions allows an unauthorized attacker to execute code locally.
Use after free in HEIF Image Extensions allows an unauthorized attacker to execute code locally.
- Record
GHSA-wq58-gp4p-hwh6- CVSS 3.1
- 7.0 High
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-416
- Updated
- 2026-11-10
NVD
Use after free in HEIF Image Extensions allows an unauthorized attacker to execute code locally.
- Record
CVE-2026-100204- CVSS 3.1
- 7.0 High
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H - Weakness
- CWE-416
- Updated
- 2026-11-11
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| PoC in GitHub | OntologicallyGood/property-damage | 2026-11-08 |
History
| Recorded | Changed | Sources |
|---|---|---|
| exploits, facts | NVD, PoC in GitHub | |
| published | EUVD | |
| published | EUVD, NVD | |
| aliases, references | GitHub Advisories | |
| cwes, references, severity, title | CVE List | |
| first indexed | EUVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-100204 is a high vulnerability (CVSS 7.0) in Microsoft Heif Image Extension, published November 10, 2026. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 0.48%, the 41st percentile. No source names a fixed version.