Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessDeliver crafted OLE object to target
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DeliveryVictim processes/previews malicious object
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ExploitTrigger untrusted pointer dereference in OLE
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ExecutionControl pointer and execute arbitrary code
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ImpactFull compromise of host (total impact)
Vulnerability Assessment
| Weakness |
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Untrusted pointer prevention
|
| Exploitation Conditions | Exploitation requires the vulnerable Windows OLE component to process an attacker-controlled OLE object (typically embedded in a document, email, or file), and the attacker must sufficiently control the dereferenced pointer and memory layout to achieve code execution. Microsoft's vector asserts UI:N and PR:N, implying no authentication and potentially automatic triggering (e.g., via preview/embedded-object handling), but OLE flaws of this class commonly depend on a user opening or previewing crafted content - the practical limiting factor. Patched builds per EUVD close the issue, so unpatched systems in the listed version ranges are the exposed population; there is no indication a non-default configuration is required. |
| Impact | Signals diverge sharply here, so this warrants nuance. CVSS 3.1 is 9.8 (AV:N/AC:L/PR:N/UI:N) with total C/I/A impact, and SSVC rates Technical Impact as 'total' and Automatable as 'yes' - on paper a top-tier remote, unauthenticated RCE. However, SSVC Exploitation is 'none', there is no CISA KEV listing, no POC, and no EPSS score was provided, so there is currently no evidence of exploitation or published exploit code. A material tension exists: the flaw is CWE-822 (untrusted pointer dereference) in Windows OLE, a component historically reached by a victim opening or previewing a malicious document/object rather than by a purely server-side network request; the UI:N in Microsoft's vector likely reflects preview-pane or embedded-object triggering, but real-world exploitation very plausibly requires user interaction and non-trivial pointer control - verify the true delivery path with Microsoft. Net: treat as a high patching priority given ubiquitous Windows footprint, a vendor patch, and 'automatable=yes', but temper urgency because no active exploitation or POC is currently known (SSVC exploitation=none, no KEV). |
| Exploit ScenarioDerived | A remote attacker delivers a crafted OLE object (e.g., embedded in an Office document, email, or file) that, when processed by a vulnerable Windows system, triggers an untrusted pointer dereference in the OLE subsystem. By controlling the dereferenced pointer and memory layout, the attacker achieves arbitrary code execution with the impacted process's privileges. No public exploit identified at time of analysis, and the low attack complexity (AC:L) in the vendor vector suggests reliable triggering once a malicious object is processed. |
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Alert meAnalysisAIv1 – Oct 13, 2026
Untrusted pointer dereference in Windows OLE (Object Linking and Embedding) permits remote code execution on unpatched Windows systems, with the vulnerable component processing an attacker-supplied OLE object such as an embedded object inside a document, email, or other file. The vendor-declared CVSS 3.1 vector is AV:N/AC:L/PR:N/UI:N (9.8), but our independent assessment scores it 9.8 with AC:H/UI:R, reflecting that successful exploitation realistically requires a victim to open or preview crafted content and that the attacker must control both the dereferenced pointer and the surrounding memory layout to gain code execution. Exploitation status is currently negative: CISA's SSVC decision framework rates Exploitation as "none," no CISA KEV listing is present, and no public exploit code has been identified at time of analysis, though the flaw is fully automatable (SSVC Automatable: yes) with total technical impact if triggered. Vendor patches are available, and every Windows build below the fixed build numbers listed in the EUVD data remains exposed.
RemediationAI
Vendor-released patches are available: apply the Microsoft security update for CVE-2026-96924 so that each host reaches or exceeds its fixed build - 10.0.14393.9612 (Windows 10 1607 / Server 2016), 10.0.17763.9376 (Windows 10 1809 / Server 2019), 10.0.19044.7807 (Windows 10 21H2/22H2), 10.0.22631.7652 (Windows 11 23H2), 10.0.26100.9711 (Windows 11 24H2) or 10.0.26100.33650 (Server 2025), 10.0.26200.9711 (Windows 11 25H2), 10.0.26300.9711 (Windows 11 26H2), 10.0.28000.3231 (Windows 11 26H1), 10.0.20348.5761 (Server 2022), 6.3.9600.23470 (Server 2012 R2), and 6.2.9200.26434 (Server 2012); consult https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96924 for the exact KB per build and note that the 2012/2012 R2 updates require the paid Extended Security Update program, so those platforms may have no freely obtainable fix and should be migrated off if ESU is not in place. Where patching must be staged, reduce exposure to the OLE parsing path: block OLE/embedded-object file types at the email gateway and web proxy and enable Mark-of-the-Web enforcement so downloaded documents open in a restricted mode - the trade-off is that legitimate macro-free embedded-object workflows will break or require user overrides. Disable Explorer preview panes and thumbnail handlers for untrusted locations (via policy or by removing the relevant preview handlers) so simply browsing a folder or email no longer renders an OLE object; this costs preview convenience but removes a trigger surface. Deploy the Microsoft Defender Attack Surface Reduction rules that block Office applications from creating child processes and from injecting code, and run Office in Protected View for files from the internet - these substantially raise exploitation cost but can interfere with signed add-ins and legitimate automation. Segment and restrict SMB/RDP and other file-transfer paths into servers running the exposed builds, since server SKUs back to 2012 are in scope, and monitor for surprising child processes (for example, Office spawning scripting or shell binaries), which is the highest-fidelity detection signal for a successful dereference-to-execution chain. None of these compensating controls address the underlying pointer-validation defect, so they should be treated only as temporary measures until the patched build is applied.
Affected VersionsENISA
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 20 packages in euvd
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This is a memory-safety defect in Microsoft's OLE subsystem, classified under CWE-822 (Untrusted Pointer Dereference): the code follows a pointer value that originated from untrusted input without validating it, so a crafted OLE object can redirect the dereference to attacker-influenced memory. OLE underpins Compound Document / structured-storage handling, embedded and linked objects, and the COM plumbing exposed through libraries such as ole32/oleaut32, and is reached whenever Windows or an application parses a document containing an embedded object, including thumbnail/preview and shell-handling paths typically triggered once a user opens, previews, or interacts with such content. Successful exploitation therefore depends not just on supplying a malformed OLE stream but on shaping memory so the dereferenced pointer lands on controlled data - which is why the exploit complexity is assessed as high even though the vendor vector advertises AC:L/UI:N. The CPE/version data shows the affected population spans the modern Windows servicing branches (Windows 10 21H2/22H2, Windows 11 23H2/24H2/25H2/26H1/26H2) as well as the server line back to Windows Server 2012 and 2012 R2, so the OLE code path is common across client and server SKUs rather than confined to a single product or edition. There is no indication that a non-default configuration is required to expose the flaw.
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Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
OLE untrusted-pointer RCE realistically needs a victim to open crafted content (UI:R) and reliable pointer/heap control (AC:H); no auth (PR:N), full host impact.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
Lifecycle Timeline
2DescriptionCVE.org
Untrusted pointer dereference in Windows OLE allows an unauthorized attacker to execute code over a network.
Executive ViewAI
Windows Object Linking and Embedding (OLE) contains a critical remote code execution vulnerability that affects unpatched Windows systems across the organization, allowing an attacker to gain full control of a machine if a user opens a crafted document or email. Although no public exploit identified at time of analysis exists, the flaw is fully automatable and carries total technical impact, making immediate patching essential to prevent potential widespread compromise.
Apply vendor patch.
Threat Intelligence Overview
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
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EUVD-2026-100251
GHSA-36m5-r93q-gfxh
NVD
CVE.org
EPSS
Vulnrichment
Exploit-DB