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CVE-20XX-?

CVE-2026-78439

8.8 HIGH 0.8% exploit odds No fix listed Memory safety

What it is

Stack-based buffer overflow in Microsoft Graphics Component allows an unauthorized attacker to execute code over a network.

At a glance

Exploitability: Can be exploited over the network without logging in, but needs a user to act. High risk of data exposure, data tampering, service disruption.
Exploit odds: 0.8% chance of exploitation in the next 30 days (EPSS).
Fix: No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

2026-09-08 18:20 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-09-17 20:18 UTC Last updatedMost recent change to the record

Details

Published: 2026-09-08 18:20 UTC
Last modified: 2026-09-17 20:18 UTC
Exploit probability: 0.8% · EPSS, next 30 days
Weakness: CWE-121
Record status: Undergoing Analysis

Attack profile CVSS 3.1 · 8.8

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Required
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: High

Raw vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Meme: I wake up, CVE-2026-78439

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References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-78439

NVD record · CVE.org record