Quick answers
- Is CVE-2026-77493 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-77493 being exploited in the wild.
- How severe is CVE-2026-77493?
- Critical severity, with a CVSS score of 9.8, published 8 September 2026.
- Which products and versions are affected?
- Microsoft Graphics Component.
- Is there a fix for CVE-2026-77493?
- 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-2026-77493 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-77493?
- Check whether you run Microsoft Graphics 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
The vulnerability is a double free condition in the Microsoft Graphics Component, which occurs when memory is freed twice, potentially leading to memory corruption and arbitrary code execution. The flaw is reachable over a network without requiring prior authentication or user interaction. An attacker can exploit this by sending specially crafted network packets to trigger the double free condition, gaining code execution in the context of the Graphics Component process. The high CVSS score of 9.8 reflects the ease of exploitation and severity of impact.
Affected products
- Microsoft Graphics Component
Timeline
- 2026-09-08: disclosed