Common Weakness Enumeration
CWE-843
AllowedAccess of Resource Using Incompatible Type ('Type Confusion')
Abstraction: Base · Status: Incomplete
The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.
1104 vulnerabilities reference this CWE, most recent first.
CVE-2026-77237 (GCVE-0-2026-77237)
Vulnerability from cvelistv5 – Published: 2026-08-21 17:52 – Updated: 2026-08-21 20:15
VLAI
EPSS
VEX
Title
Missing type validation in xQueueAddToSet in FreeRTOS-Kernel
Summary
Missing queue-set type validation in xQueueAddToSet() in the FreeRTOS-Kernel before 11.3.1 might allow an unprivileged task on MPU-enabled ports with configUSE_QUEUE_SETS=1 to read privileged kernel memory. To remediate this issue, users should upgrade to version 11.3.1 or later.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 19:44 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/FreeRTOS/FreeRTOS-Kernel/relea… | patch |
| https://aws.amazon.com/security/security-bulletin… | vendor-advisory |
| https://github.com/FreeRTOS/FreeRTOS-Kernel/secur… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| FreeRTOS | FreeRTOS-Kernel |
Affected:
7.4.0 , ≤ 11.3.0
(custom)
cpe:2.3:a:freertos:freertos-kernel:*:*:*:*:*:*:*:* |
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CVE-2026-72844 (GCVE-0-2026-72844)
Vulnerability from cvelistv5 – Published: 2026-08-20 17:19 – Updated: 2026-08-21 21:46
VLAI
EPSS
VEX
Title
Lean 4 Kernel Type Checking Bypass via Mismatched Structure Projections
Summary
The Lean 4 kernel does not verify that the structure named in a projection expression matches the type of the value being projected, and environment::add_inductive in src/kernel/inductive.cpp did not type check the nested inductive applications that are replaced by auxiliary types, so their parametric arguments escaped checking. A metaprogram running in the Lean process can register an ill-typed nested inductive whose constructor applies a .proj C 0 projection to a value of the unrelated type W, and the kernel admits the declaration through the ordinary checked addDecl path at maximum kernel checking, without sorry, unsafeCast, debug.skipKernelTC, addDeclWithoutChecking, FFI, or a modified .olean file. The result is a type confusion yielding a proof of False that carries no axioms, from which any proposition can be derived. The published proof of concept additionally pads two expressions until their hashes and approximate depths collide, which defeats kernel caching; that is the technique used to reach the flaw, not its cause. Exploitation requires running a metaprogram in-process, for example by building a project or importing a malicious Lake dependency.
Severity
6.3 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-21 21:13 UTC
CWE
- CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
Assigner
References
8 references
| URL | Tags |
|---|---|
| https://github.com/leanprover/lean4/issues/14576 | issue-tracking |
| https://github.com/leanprover/lean4/commit/a39eab… | patch |
| https://github.com/leanprover/lean4/pull/14577 | issue-tracking |
| https://github.com/endrazine/lean-cve-poc | exploit |
| https://github.com/xrchz/CollatzLean | exploit |
| https://www.openwall.com/lists/oss-security/2026/… | third-party-advisory |
| https://github.com/leanprover/lean4 | product |
| https://www.vulncheck.com/advisories/lean-4-kerne… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| leanprover | lean4 |
Affected:
0 , < 4.32.2
(semver)
Unaffected: 4.32.2 (semver) Affected: 4.33.0-rc1 (semver) |
Date Public
2026-07-28 00:00
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CVE-2026-72766 (GCVE-0-2026-72766)
Vulnerability from cvelistv5 – Published: 2026-08-11 12:17 – Updated: 2026-08-14 19:50
VLAI
EPSS
VEX
Title
n8n before 1.123.67 Arbitrary File Read via Send Email Node
Summary
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Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-14 19:50 UTC
CWE
- CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/n8n-io/n8n/security/advisories… | vendor-advisory |
| https://www.vulncheck.com/advisories/n8n-before-a… | third-party-advisory |
Impacted products
Date Public
2026-07-22 00:00
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CVE-2026-70339 (GCVE-0-2026-70339)
Vulnerability from cvelistv5 – Published: 2026-08-11 19:18 – Updated: 2026-08-24 16:08
VLAI
EPSS
VEX
Title
Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
Summary
Access of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-12 04:00 UTC
CWE
- CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft Edge (Chromium-based) |
Affected:
1.0.0.0 , < 151.0.4129.78
(custom)
cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:*:*:*:* |
Date Public
2026-08-11 14:00
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CVE-2026-68811 (GCVE-0-2026-68811)
Vulnerability from cvelistv5 – Published: 2026-08-11 17:05 – Updated: 2026-08-24 16:07
VLAI
EPSS
VEX
Title
Microsoft Excel Remote Code Execution Vulnerability
Summary
Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-12 03:57 UTC
CWE
- CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
9 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft 365 Apps for Enterprise |
Affected:
16.0.1 , < https://aka.ms/OfficeSecurityReleases
(custom)
|
|
| Microsoft | Microsoft Excel 2016 |
Affected:
16.0.0.0 , < 16.0.5565.1001
(custom)
|
|
| Microsoft | Microsoft Office 2019 |
Affected:
19.0.0 , < https://aka.ms/OfficeSecurityReleases
(custom)
|
|
| Microsoft | Microsoft Office 365 for Mac |
Affected:
1.0.0 , < 16.112.26081010
(custom)
|
|
| Microsoft | Microsoft Office LTSC 2021 |
Affected:
16.0.1 , < https://aka.ms/OfficeSecurityReleases
(custom)
|
|
| Microsoft | Microsoft Office LTSC 2024 |
Affected:
16.0.0 , < https://aka.ms/OfficeSecurityReleases
(custom)
|
|
| Microsoft | Microsoft Office LTSC for Mac 2021 |
Affected:
16.0.1 , < 16.112.26081010
(custom)
|
|
| Microsoft | Microsoft Office LTSC for Mac 2024 |
Affected:
16.0.0 , < 16.112.26081010
(custom)
|
|
| Microsoft | Office Online Server |
Affected:
16.0.0.0 , < 16.0.10417.20175
(custom)
|
Date Public
2026-08-11 14:00
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CVE-2026-68803 (GCVE-0-2026-68803)
Vulnerability from cvelistv5 – Published: 2026-08-11 17:07 – Updated: 2026-08-24 16:09
VLAI
EPSS
VEX
Title
Microsoft Excel Remote Code Execution Vulnerability
Summary
Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-12 03:57 UTC
CWE
- CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
9 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft 365 Apps for Enterprise |
Affected:
16.0.1 , < https://aka.ms/OfficeSecurityReleases
(custom)
|
|
| Microsoft | Microsoft Excel 2016 |
Affected:
16.0.0.0 , < 16.0.5565.1001
(custom)
|
|
| Microsoft | Microsoft Office 2019 |
Affected:
19.0.0 , < https://aka.ms/OfficeSecurityReleases
(custom)
|
|
| Microsoft | Microsoft Office 365 for Mac |
Affected:
1.0.0 , < 16.112.26081010
(custom)
|
|
| Microsoft | Microsoft Office LTSC 2021 |
Affected:
16.0.1 , < https://aka.ms/OfficeSecurityReleases
(custom)
|
|
| Microsoft | Microsoft Office LTSC 2024 |
Affected:
16.0.0 , < https://aka.ms/OfficeSecurityReleases
(custom)
|
|
| Microsoft | Microsoft Office LTSC for Mac 2021 |
Affected:
16.0.1 , < 16.112.26081010
(custom)
|
|
| Microsoft | Microsoft Office LTSC for Mac 2024 |
Affected:
16.0.0 , < 16.112.26081010
(custom)
|
|
| Microsoft | Office Online Server |
Affected:
16.0.0.0 , < 16.0.10417.20175
(custom)
|
Date Public
2026-08-11 14:00
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CVE-2026-66321 (GCVE-0-2026-66321)
Vulnerability from cvelistv5 – Published: 2026-08-03 22:51 – Updated: 2026-08-24 20:59
VLAI
EPSS
VEX
Title
Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
Summary
Access of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-04 00:00 UTC
CWE
- CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft Edge (Chromium-based) |
Affected:
1.0.0.0 , < 151.0.4129.59
(custom)
cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:*:*:*:* |
Date Public
2026-07-31 14:00
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CVE-2026-65807 (GCVE-0-2026-65807)
Vulnerability from cvelistv5 – Published: 2026-08-11 17:05 – Updated: 2026-08-24 16:07
VLAI
EPSS
VEX
Title
Microsoft Excel Remote Code Execution Vulnerability
Summary
Access of resource using incompatible type ('type confusion') in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-12 03:57 UTC
CWE
- CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
9 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft 365 Apps for Enterprise |
Affected:
16.0.1 , < https://aka.ms/OfficeSecurityReleases
(custom)
|
|
| Microsoft | Microsoft Excel 2016 |
Affected:
16.0.0.0 , < 16.0.5565.1001
(custom)
|
|
| Microsoft | Microsoft Office 2019 |
Affected:
19.0.0 , < https://aka.ms/OfficeSecurityReleases
(custom)
|
|
| Microsoft | Microsoft Office 365 for Mac |
Affected:
1.0.0 , < 16.112.26081010
(custom)
|
|
| Microsoft | Microsoft Office LTSC 2021 |
Affected:
16.0.1 , < https://aka.ms/OfficeSecurityReleases
(custom)
|
|
| Microsoft | Microsoft Office LTSC 2024 |
Affected:
16.0.0 , < https://aka.ms/OfficeSecurityReleases
(custom)
|
|
| Microsoft | Microsoft Office LTSC for Mac 2021 |
Affected:
16.0.1 , < 16.112.26081010
(custom)
|
|
| Microsoft | Microsoft Office LTSC for Mac 2024 |
Affected:
16.0.0 , < 16.112.26081010
(custom)
|
|
| Microsoft | Office Online Server |
Affected:
16.0.0.0 , < 16.0.10417.20175
(custom)
|
Date Public
2026-08-11 14:00
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CVE-2026-64904 (GCVE-0-2026-64904)
Vulnerability from cvelistv5 – Published: 2026-08-11 17:06 – Updated: 2026-08-24 16:09
VLAI
EPSS
VEX
Title
Microsoft Office Remote Code Execution Vulnerability
Summary
Access of resource using incompatible type ('type confusion') in Microsoft Office allows an unauthorized attacker to execute code locally.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-06 00:00 UTC
CWE
- CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
7 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Microsoft 365 Apps for Enterprise |
Affected:
16.0.1 , < https://aka.ms/OfficeSecurityReleases
(custom)
|
|
| Microsoft | Microsoft Office 2019 |
Affected:
19.0.0 , < https://aka.ms/OfficeSecurityReleases
(custom)
|
|
| Microsoft | Microsoft Office 365 for Mac |
Affected:
1.0.0 , < 16.112.26081010
(custom)
|
|
| Microsoft | Microsoft Office LTSC 2021 |
Affected:
16.0.1 , < https://aka.ms/OfficeSecurityReleases
(custom)
|
|
| Microsoft | Microsoft Office LTSC 2024 |
Affected:
16.0.0 , < https://aka.ms/OfficeSecurityReleases
(custom)
|
|
| Microsoft | Microsoft Office LTSC for Mac 2021 |
Affected:
16.0.1 , < 16.112.26081010
(custom)
|
|
| Microsoft | Microsoft Office LTSC for Mac 2024 |
Affected:
16.0.0 , < 16.112.26081010
(custom)
|
Date Public
2026-08-11 14:00
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CVE-2026-64608 (GCVE-0-2026-64608)
Vulnerability from cvelistv5 – Published: 2026-07-21 09:34 – Updated: 2026-07-21 18:28
VLAI
EPSS
VEX
Title
Apache Fory: Heap type confusion and out-of-bounds read/write in C++ compatible-mode field-skip paths
Summary
Heap type confusion and out-of-bounds read/write in the Apache Fory C++ implementation. When deserializing data in compatible mode, the field-skip paths do not correctly validate the declared field types against the actual data, so input with an inconsistent schema can cause type confusion and out-of-bounds memory access. Only the C++ implementation is affected; other language implementations of Apache Fory are not.
This issue affects Apache Fory C++: from 0.14.0 before 1.4.0.
Users are recommended to upgrade to version 1.4.0, which fixes the issue.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-21 13:39 UTC
CWE
Assigner
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Fory |
Affected:
0.14.0 , < 1.4.0
(semver)
|
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No mitigation information available for this CWE.
No CAPEC attack patterns related to this CWE.