Quick answers
- Is CVE-2026-77496 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-77496 being exploited in the wild.
- How severe is CVE-2026-77496?
- High severity, with a CVSS score of 8.8, published 13 October 2026.
- Which products and versions are affected?
- Microsoft Windows Imaging Component.
- Is there a fix for CVE-2026-77496?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-77496 attacked?
- It is attacked over the network, in an operating system.
- Am I affected by CVE-2026-77496?
- Check whether you run Microsoft Windows Imaging Component. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A heap-based buffer overflow exists in Windows Imaging Component's image processing functionality, allowing remote code execution with network attack vector. The vulnerability requires user interaction (opening a malicious image) but no authentication. Successful exploitation grants arbitrary code execution in the context of the affected process.
Affected products
- Microsoft Windows Imaging Component
Timeline
- 2026-10-13: disclosed