Common Weakness Enumeration
CWE-367
AllowedTime-of-check Time-of-use (TOCTOU) Race Condition
Abstraction: Base · Status: Incomplete
The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check.
1063 vulnerabilities reference this CWE, most recent first.
CVE-2024-47813 (GCVE-0-2024-47813)
Vulnerability from cvelistv5 – Published: 2024-10-09 18:07 – Updated: 2024-10-09 19:43
VLAI
EPSS
VEX
Title
Wasmtime race condition could lead to WebAssembly control-flow integrity and type safety violations
Summary
Wasmtime is an open source runtime for WebAssembly. Under certain concurrent event orderings, a `wasmtime::Engine`'s internal type registry was susceptible to double-unregistration bugs due to a race condition, leading to panics and potentially type registry corruption. That registry corruption could, following an additional and particular sequence of concurrent events, lead to violations of WebAssembly's control-flow integrity (CFI) and type safety. Users that do not use `wasmtime::Engine` across multiple threads are not affected. Users that only create new modules across threads over time are additionally not affected. Reproducing this bug requires creating and dropping multiple type instances (such as `wasmtime::FuncType` or `wasmtime::ArrayType`) concurrently on multiple threads, where all types are associated with the same `wasmtime::Engine`. **Wasm guests cannot trigger this bug.** See the "References" section below for a list of Wasmtime types-related APIs that are affected. Wasmtime maintains an internal registry of types within a `wasmtime::Engine` and an engine is shareable across threads. Types can be created and referenced through creation of a `wasmtime::Module`, creation of `wasmtime::FuncType`, or a number of other APIs where the host creates a function (see "References" below). Each of these cases interacts with an engine to deduplicate type information and manage type indices that are used to implement type checks in WebAssembly's `call_indirect` function, for example. This bug is a race condition in this management where the internal type registry could be corrupted to trigger an assert or contain invalid state. Wasmtime's internal representation of a type has individual types (e.g. one-per-host-function) maintain a registration count of how many time it's been used. Types additionally have state within an engine behind a read-write lock such as lookup/deduplication information. The race here is a time-of-check versus time-of-use (TOCTOU) bug where one thread atomically decrements a type entry's registration count, observes zero registrations, and then acquires a lock in order to unregister that entry. However, between when this first thread observed the zero-registration count and when it acquires that lock, another thread could perform the following sequence of events: re-register another copy of the type, which deduplicates to that same entry, resurrecting it and incrementing its registration count; then drop the type and decrement its registration count; observe that the registration count is now zero; acquire the type registry lock; and finally unregister the type. Now, when the original thread finally acquires the lock and unregisters the entry, it is the second time this entry has been unregistered. This bug was originally introduced in Wasmtime 19's development of the WebAssembly GC proposal. This bug affects users who are not using the GC proposal, however, and affects Wasmtime in its default configuration even when the GC proposal is disabled. Wasmtime users using 19.0.0 and after are all affected by this issue. We have released the following Wasmtime versions, all of which have a fix for this bug: * 21.0.2 * 22.0.1 * 23.0.3 * 24.0.1 * 25.0.2. If your application creates and drops Wasmtime types on multiple threads concurrently, there are no known workarounds. Users are encouraged to upgrade to a patched release.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/bytecodealliance/wasmtime/secu… | x_refsource_CONFIRM |
| https://github.com/bytecodealliance/wasmtime/pull/7969 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| bytecodealliance | wasmtime |
Affected:
>= 19.0.0, < 21.0.2
Affected: >= 22.0.0, < 22.0.1 Affected: >= 23.0.0, < 23.0.3 Affected: >= 24.0.0, < 24.0.1 Affected: >= 25.0.0, < 25.0.2 |
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CVE-2024-47494 (GCVE-0-2024-47494)
Vulnerability from cvelistv5 – Published: 2024-10-11 15:24 – Updated: 2024-10-11 17:48
VLAI
EPSS
VEX
Title
Junos OS: Due to a race condition AgentD process causes a memory corruption and FPC reset
Summary
A Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability in the AgentD process of Juniper Networks Junos OS allows an attacker who is already causing impact to established sessions which generates counter changes picked up by the AgentD process during telemetry polling, to move the AgentD process into a state where AgentD attempts to reap an already destroyed sensor. This reaping attempt then leads to memory corruption causing the FPC to crash which is a Denial of Service (DoS).
The FPC will recover automatically without user intervention after the crash.
This issue affects Junos OS:
* All versions before 21.4R3-S9
* From 22.2 before 22.2R3-S5,
* From 22.3 before 22.3R3-S4,
* From 22.4 before 22.4R3-S3,
* From 23.2 before 23.2R2-S2,
* From 23.4 before 23.4R2.
This issue does not affect Junos OS Evolved.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://supportportal.juniper.net/JSA88121 | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | Junos OS |
Affected:
0 , < 21.4R3-S9
(semver)
Affected: 22.2 , < 22.2R3-S5 (semver) Affected: 22.3 , < 22.3R3-S4 (semver) Affected: 22.4 , < 22.4R3-S3 (semver) Affected: 23.2 , < 23.2R2-S2 (semver) Affected: 23.4 , < 23.4R2 (semver) |
Date Public
2024-10-09 16:00
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CVE-2024-45565 (GCVE-0-2024-45565)
Vulnerability from cvelistv5 – Published: 2025-05-06 08:31 – Updated: 2026-02-26 18:29
VLAI
EPSS
VEX
Title
Time-of-check Time-of-use (TOCTOU) Race Condition in Camera Driver
Summary
Memory corruption when blob structure is modified by user-space after kernel verification.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Qualcomm, Inc. | Snapdragon |
Affected:
SDM429W
Affected: Snapdragon 429 Mobile Platform Affected: WCN3620 Affected: WCN3660B |
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CVE-2024-45560 (GCVE-0-2024-45560)
Vulnerability from cvelistv5 – Published: 2025-02-03 16:51 – Updated: 2025-02-12 20:51
VLAI
EPSS
VEX
Title
Time-of-check Time-of-use (TOCTOU) Race Condition in Camera
Summary
Memory corruption while taking a snapshot with hardware encoder due to unvalidated userspace buffer.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Qualcomm, Inc. | Snapdragon |
Affected:
AQT1000
Affected: FastConnect 6200 Affected: FastConnect 6700 Affected: FastConnect 6800 Affected: FastConnect 6900 Affected: FastConnect 7800 Affected: QCA6391 Affected: QCA6420 Affected: QCA6430 Affected: QCM5430 Affected: QCM6490 Affected: QCS5430 Affected: QCS6490 Affected: Qualcomm Video Collaboration VC3 Platform Affected: SC8380XP Affected: SDM429W Affected: Snapdragon 429 Mobile Platform Affected: Snapdragon 7c+ Gen 3 Compute Affected: Snapdragon 8c Compute Platform (SC8180X-AD) "Poipu Lite" Affected: Snapdragon 8cx Compute Platform (SC8180X-AA, AB) Affected: Snapdragon 8cx Gen 2 5G Compute Platform (SC8180X-AC, AF) "Poipu Pro" Affected: Snapdragon 8cx Gen 3 Compute Platform (SC8280XP-AB, BB) Affected: WCD9340 Affected: WCD9341 Affected: WCD9370 Affected: WCD9375 Affected: WCD9380 Affected: WCD9385 Affected: WCN3620 Affected: WCN3660B Affected: WSA8810 Affected: WSA8815 Affected: WSA8830 Affected: WSA8835 Affected: WSA8840 Affected: WSA8845 Affected: WSA8845H |
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CVE-2024-45120 (GCVE-0-2024-45120)
Vulnerability from cvelistv5 – Published: 2024-10-10 09:57 – Updated: 2024-12-12 17:36
VLAI
EPSS
VEX
Title
Adobe Commerce | Time-of-check Time-of-use (TOCTOU) Race Condition (CWE-367)
Summary
Adobe Commerce versions 2.4.7-p2, 2.4.6-p7, 2.4.5-p9, 2.4.4-p10 and earlier are affected by a Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability that could lead to a security feature bypass. An attacker could exploit this vulnerability to alter a condition between the check and the use of a resource, having a low impact on integrity. Exploitation of this issue requires user interaction.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition (CWE-367)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://helpx.adobe.com/security/products/magento… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Adobe | Adobe Commerce |
Affected:
0 , ≤ 2.4.4-p10
(semver)
|
Date Public
2024-10-08 17:00
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CVE-2024-43511 (GCVE-0-2024-43511)
Vulnerability from cvelistv5 – Published: 2024-10-08 17:35 – Updated: 2026-06-09 18:29
VLAI
EPSS
VEX
Title
Windows Kernel Elevation of Privilege Vulnerability
Summary
Windows Kernel Elevation of Privilege Vulnerability
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisorypatch |
Impacted products
16 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 10 Version 1507 |
Affected:
10.0.10240.0 , < 10.0.10240.20826
(custom)
|
|
| Microsoft | Windows 10 Version 1607 |
Affected:
10.0.14393.0 , < 10.0.14393.7515
(custom)
|
|
| Microsoft | Windows 10 Version 1809 |
Affected:
10.0.17763.0 , < 10.0.17763.6532
(custom)
|
|
| Microsoft | Windows 10 Version 21H2 |
Affected:
10.0.19044.0 , < 10.0.19044.5131
(custom)
|
|
| Microsoft | Windows 10 Version 22H2 |
Affected:
10.0.19045.0 , < 10.0.19045.5131
(custom)
|
|
| Microsoft | Windows 11 version 21H2 |
Affected:
10.0.22000.0 , < 10.0.22000.3260
(custom)
|
|
| Microsoft | Windows 11 version 22H2 |
Affected:
10.0.22621.0 , < 10.0.22621.4460
(custom)
|
|
| Microsoft | Windows 11 version 22H3 |
Affected:
10.0.22631.0 , < 10.0.22631.4460
(custom)
|
|
| Microsoft | Windows 11 Version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.4460
(custom)
|
|
| Microsoft | Windows 11 Version 24H2 |
Affected:
10.0.26100.0 , < 10.0.26100.2303
(custom)
|
|
| Microsoft | Windows Server 2016 |
Affected:
10.0.14393.0 , < 10.0.14393.7515
(custom)
|
|
| Microsoft | Windows Server 2016 (Server Core installation) |
Affected:
10.0.14393.0 , < 10.0.14393.7515
(custom)
|
|
| Microsoft | Windows Server 2019 |
Affected:
10.0.17763.0 , < 10.0.17763.6532
(custom)
|
|
| Microsoft | Windows Server 2019 (Server Core installation) |
Affected:
10.0.17763.0 , < 10.0.17763.6532
(custom)
|
|
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.2849
(custom)
|
|
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) |
Affected:
10.0.25398.0 , < 10.0.25398.1251
(custom)
|
Date Public
2024-10-08 07:00
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CVE-2024-43452 (GCVE-0-2024-43452)
Vulnerability from cvelistv5 – Published: 2024-11-12 17:53 – Updated: 2025-07-08 15:41
VLAI
EPSS
VEX
Title
Windows Registry Elevation of Privilege Vulnerability
Summary
Windows Registry Elevation of Privilege Vulnerability
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://msrc.microsoft.com/update-guide/vulnerabi… | vendor-advisory |
Impacted products
15 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 10 Version 1809 |
Affected:
10.0.17763.0 , < 10.0.17763.6532
(custom)
|
|
| Microsoft | Windows Server 2019 |
Affected:
10.0.17763.0 , < 10.0.17763.6532
(custom)
|
|
| Microsoft | Windows Server 2019 (Server Core installation) |
Affected:
10.0.17763.0 , < 10.0.17763.6532
(custom)
|
|
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.2849
(custom)
|
|
| Microsoft | Windows 10 Version 21H2 |
Affected:
10.0.19043.0 , < 10.0.19044.5131
(custom)
|
|
| Microsoft | Windows 11 version 22H2 |
Affected:
10.0.22621.0 , < 10.0.22621.4460
(custom)
|
|
| Microsoft | Windows 10 Version 22H2 |
Affected:
10.0.19045.0 , < 10.0.19045.5131
(custom)
|
|
| Microsoft | Windows 11 version 22H3 |
Affected:
10.0.22631.0 , < 10.0.22631.4460
(custom)
|
|
| Microsoft | Windows 11 Version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.4460
(custom)
|
|
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) |
Affected:
10.0.25398.0 , < 10.0.25398.1251
(custom)
|
|
| Microsoft | Windows 11 Version 24H2 |
Affected:
10.0.26100.0 , < 10.0.26100.2314
(custom)
|
|
| Microsoft | Windows Server 2008 Service Pack 2 |
Affected:
6.0.6003.0 , < 6.0.6003.22966
(custom)
|
|
| Microsoft | Windows Server 2008 Service Pack 2 (Server Core installation) |
Affected:
6.0.6003.0 , < 6.0.6003.22966
(custom)
|
|
| Microsoft | Windows Server 2025 |
Affected:
10.0.26100.0 , < 10.0.26100.2314
(custom)
|
|
| Microsoft | Windows Server 2025 (Server Core installation) |
Affected:
10.0.26100.0 , < 10.0.26100.2314
(custom)
|
Date Public
2024-11-12 08:00
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CVE-2024-43067 (GCVE-0-2024-43067)
Vulnerability from cvelistv5 – Published: 2025-04-07 10:15 – Updated: 2026-02-26 18:28
VLAI
EPSS
VEX
Title
Time-of-check Time-of-use (TOCTOU) Race Condition in Camera
Summary
Memory corruption occurs during the copying of read data from the EEPROM because the IO configuration is exposed as shared memory.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Qualcomm, Inc. | Snapdragon |
Affected:
C-V2X 9150
Affected: FastConnect 6800 Affected: FastConnect 6900 Affected: FastConnect 7800 Affected: QAM8295P Affected: QCA6391 Affected: QCA6426 Affected: QCA6436 Affected: QCA6574AU Affected: QCA6696 Affected: QCN9074 Affected: QCS410 Affected: QCS610 Affected: QSM8250 Affected: Qualcomm Video Collaboration VC1 Platform Affected: Qualcomm Video Collaboration VC3 Platform Affected: SA6145P Affected: SA6150P Affected: SA6155P Affected: SA8145P Affected: SA8150P Affected: SA8155P Affected: SA8195P Affected: SA8295P Affected: SA8530P Affected: SA8540P Affected: SA9000P Affected: SD865 5G Affected: SDM429W Affected: SDX55 Affected: Snapdragon 429 Mobile Platform Affected: Snapdragon 8 Gen 1 Mobile Platform Affected: Snapdragon 865 5G Mobile Platform Affected: Snapdragon 865+ 5G Mobile Platform (SM8250-AB) Affected: Snapdragon 870 5G Mobile Platform (SM8250-AC) Affected: Snapdragon W5+ Gen 1 Wearable Platform Affected: Snapdragon X55 5G Modem-RF System Affected: Snapdragon XR2 5G Platform Affected: SW5100 Affected: SW5100P Affected: SXR2130 Affected: SXR2230P Affected: SXR2250P Affected: WCD9341 Affected: WCD9370 Affected: WCD9380 Affected: WCD9385 Affected: WCN3620 Affected: WCN3660B Affected: WCN3680B Affected: WCN3950 Affected: WCN3980 Affected: WCN3988 Affected: WSA8810 Affected: WSA8815 Affected: WSA8830 Affected: WSA8832 Affected: WSA8835 |
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CVE-2024-42446 (GCVE-0-2024-42446)
Vulnerability from cvelistv5 – Published: 2025-05-13 14:02 – Updated: 2025-05-13 15:16
VLAI
EPSS
VEX
Title
TOCTOU in SmmWhea
Summary
APTIOV contains a vulnerability in BIOS where an attacker may cause a Time-of-check Time-of-use (TOCTOU) Race Condition by local means. Successful exploitation of this vulnerability may lead to arbitrary code execution.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
1 reference
Impacted products
Date Public
2025-05-13 14:01
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CVE-2024-42444 (GCVE-0-2024-42444)
Vulnerability from cvelistv5 – Published: 2025-01-14 15:00 – Updated: 2025-01-14 15:45
VLAI
EPSS
VEX
Title
TOCTOU Race Condition between DMA and SMM
Summary
APTIOV contains a vulnerability in BIOS where an attacker may cause a TOCTOU Race Condition by local means. Successful exploitation of this vulnerability may lead to execution of arbitrary code on the target device.
Severity
7.5 (High)
SSVC
Exploitation: none
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CISA Coordinator (v2.0.3)
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
1 reference
Impacted products
Date Public
2025-01-14 15:00
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Mitigation
Implementation
The most basic advice for TOCTOU vulnerabilities is to not perform a check before the use. This does not resolve the underlying issue of the execution of a function on a resource whose state and identity cannot be assured, but it does help to limit the false sense of security given by the check.
Mitigation
Implementation
When the file being altered is owned by the current user and group, set the effective gid and uid to that of the current user and group when executing this statement.
Mitigation
Architecture and Design
Limit the interleaving of operations on files from multiple processes.
Mitigation
Implementation
Architecture and Design
If you cannot perform operations atomically and you must share access to the resource between multiple processes or threads, then try to limit the amount of time (CPU cycles) between the check and use of the resource. This will not fix the problem, but it could make it more difficult for an attack to succeed.
Mitigation
Implementation
Recheck the resource after the use call to verify that the action was taken appropriately.
Mitigation
Architecture and Design
Ensure that some environmental locking mechanism can be used to protect resources effectively.
Mitigation
Implementation
Ensure that locking occurs before the check, as opposed to afterwards, such that the resource, as checked, is the same as it is when in use.
CAPEC-27: Leveraging Race Conditions via Symbolic Links
This attack leverages the use of symbolic links (Symlinks) in order to write to sensitive files. An attacker can create a Symlink link to a target file not otherwise accessible to them. When the privileged program tries to create a temporary file with the same name as the Symlink link, it will actually write to the target file pointed to by the attackers' Symlink link. If the attacker can insert malicious content in the temporary file they will be writing to the sensitive file by using the Symlink. The race occurs because the system checks if the temporary file exists, then creates the file. The attacker would typically create the Symlink during the interval between the check and the creation of the temporary file.
CAPEC-29: Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions
This attack targets a race condition occurring between the time of check (state) for a resource and the time of use of a resource. A typical example is file access. The adversary can leverage a file access race condition by "running the race", meaning that they would modify the resource between the first time the target program accesses the file and the time the target program uses the file. During that period of time, the adversary could replace or modify the file, causing the application to behave unexpectedly.