ZDI lists November 2026 Microsoft fixes, one Outlook bug exploited
CVE-2026-124194 is the only listed flaw marked exploited; it is a Moderate CVSS 6.5 spoofing bug.
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Vulnerability1 · 1 read
CVE-2026-122194
Null pointer dereference RCE in Microsoft Defender
- CVSS 3.1
- 8.8 high
- EPSS
- —
- Published
- ·
- Modified
AI analysisSummaries by Vani AI
A null pointer dereference in Microsoft Defender lets an unauthorized attacker run code over the network. No privileges are required, but the victim must interact with the attacker. Successful exploitation can fully compromise confidentiality, integrity, and availability on systems running Defender. Microsoft has not listed affected builds.
What to do: Apply Microsoft's update for CVE-2026-122194. No workaround is stated.
| Product | Affected |
|---|---|
| Microsoft Defender | — |
Estimated exposure
largeNo basis for an estimate.
Order-of-magnitude estimate by the model from install counts, market share and public scan data it knows; verify before quoting.
Description · NVD
Null pointer dereference in Microsoft Defender allows an unauthorized attacker to execute code over a network.
- Weakness
- CWE-476
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
In the news
2 storiesMicrosoft November 2026 update fixes 1,093 flaws, one Outlook zero-day
Opening a crafted file can leak an NTLMv2 hash; the Preview Pane is not an attack vector.
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