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.
1066 vulnerabilities reference this CWE, most recent first.
CVE-2025-21485 (GCVE-0-2025-21485)
Vulnerability from cvelistv5 – Published: 2025-06-03 05:53 – Updated: 2026-02-26 18:27
VLAI
EPSS
VEX
Title
Time-of-check Time-of-use (TOCTOU) Race Condition in DSP Service
Summary
Memory corruption while processing INIT and multimode invoke IOCTL calls on FastRPC.
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:
FastConnect 6900
Affected: FastConnect 7800 Affected: QMP1000 Affected: SM8735 Affected: SM8750 Affected: SM8750P Affected: Snapdragon 8 Gen 3 Mobile Platform Affected: Snapdragon W5+ Gen 1 Wearable Platform Affected: SW5100 Affected: SW5100P Affected: SXR2230P Affected: SXR2250P Affected: SXR2330P Affected: WCD9378 Affected: WCD9380 Affected: WCD9385 Affected: WCD9390 Affected: WCD9395 Affected: WCN7750 Affected: WCN7860 Affected: WCN7861 Affected: WCN7880 Affected: WCN7881 Affected: WSA8830 Affected: WSA8832 Affected: WSA8835 Affected: WSA8840 Affected: WSA8845 Affected: WSA8845H |
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{
"status": "affected",
"version": "WSA8840"
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{
"status": "affected",
"version": "WSA8845"
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CVE-2025-21473 (GCVE-0-2025-21473)
Vulnerability from cvelistv5 – Published: 2025-08-06 07:25 – Updated: 2026-02-26 17:49
VLAI
EPSS
VEX
Title
Time-of-check Time-of-use (TOCTOU) Race Condition in Camera_Linux
Summary
Memory corruption when using Virtual cdm (Camera Data Mover) to write registers.
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:
FastConnect 6900
Affected: FastConnect 7800 Affected: Snapdragon 8 Gen 1 Mobile Platform Affected: WCD9380 Affected: WSA8830 Affected: WSA8835 |
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CVE-2025-21455 (GCVE-0-2025-21455)
Vulnerability from cvelistv5 – Published: 2025-08-06 07:25 – Updated: 2026-02-26 17:49
VLAI
EPSS
VEX
Title
Time-of-check Time-of-use (TOCTOU) Race Condition in Camera_Linux
Summary
Memory corruption while submitting blob data to kernel space though IOCTL.
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:
FastConnect 6800
Affected: FastConnect 6900 Affected: FastConnect 7800 Affected: QCA6391 Affected: QCA6426 Affected: QCA6436 Affected: QSM8250 Affected: SD865 5G Affected: SDX55 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 X55 5G Modem-RF System Affected: Snapdragon XR2 5G Platform Affected: SW5100 Affected: SW5100P Affected: SXR2130 Affected: SXR2230P Affected: SXR2250P Affected: WCD9380 Affected: WCD9385 Affected: WCN3980 Affected: WCN3988 Affected: WSA8810 Affected: WSA8815 Affected: WSA8830 Affected: WSA8832 Affected: WSA8835 |
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CVE-2025-21431 (GCVE-0-2025-21431)
Vulnerability from cvelistv5 – Published: 2025-04-07 10:15 – Updated: 2025-04-07 14:58
VLAI
EPSS
VEX
Title
Time-of-check Time-of-use (TOCTOU) Race Condition in Automotive OS Platform
Summary
Information disclosure may be there when a guest VM is connected.
Severity
5.5 (Medium)
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
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Qualcomm, Inc. | Snapdragon |
Affected:
QAM8255P
Affected: QAM8295P Affected: QAM8620P Affected: QAM8650P Affected: QAM8775P Affected: QAMSRV1H Affected: QAMSRV1M Affected: QCA6574A Affected: QCA6574AU Affected: QCA6595 Affected: QCA6595AU Affected: QCA6688AQ Affected: QCA6696 Affected: QCA6698AQ Affected: SA6145P Affected: SA6150P Affected: SA6155 Affected: SA6155P Affected: SA7255P Affected: SA7775P Affected: SA8145P Affected: SA8150P Affected: SA8155 Affected: SA8155P Affected: SA8195P Affected: SA8255P Affected: SA8295P Affected: SA8540P Affected: SA8620P Affected: SA8650P Affected: SA8770P Affected: SA8775P Affected: SA9000P Affected: SRV1H Affected: SRV1L Affected: SRV1M |
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"status": "affected",
"version": "QCA6688AQ"
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"status": "affected",
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},
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"status": "affected",
"version": "QCA6698AQ"
},
{
"status": "affected",
"version": "SA6145P"
},
{
"status": "affected",
"version": "SA6150P"
},
{
"status": "affected",
"version": "SA6155"
},
{
"status": "affected",
"version": "SA6155P"
},
{
"status": "affected",
"version": "SA7255P"
},
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"status": "affected",
"version": "SA7775P"
},
{
"status": "affected",
"version": "SA8145P"
},
{
"status": "affected",
"version": "SA8150P"
},
{
"status": "affected",
"version": "SA8155"
},
{
"status": "affected",
"version": "SA8155P"
},
{
"status": "affected",
"version": "SA8195P"
},
{
"status": "affected",
"version": "SA8255P"
},
{
"status": "affected",
"version": "SA8295P"
},
{
"status": "affected",
"version": "SA8540P"
},
{
"status": "affected",
"version": "SA8620P"
},
{
"status": "affected",
"version": "SA8650P"
},
{
"status": "affected",
"version": "SA8770P"
},
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"status": "affected",
"version": "SA8775P"
},
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"status": "affected",
"version": "SA9000P"
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"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
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CVE-2025-21191 (GCVE-0-2025-21191)
Vulnerability from cvelistv5 – Published: 2025-04-08 17:23 – Updated: 2026-02-13 19:32
VLAI
EPSS
VEX
Title
Windows Local Security Authority (LSA) Elevation of Privilege Vulnerability
Summary
Time-of-check time-of-use (toctou) race condition in Windows Local Security Authority (LSA) allows an authorized attacker to elevate privileges locally.
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
25 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 10 Version 1507 |
Affected:
10.0.10240.0 , < 10.0.10240.20978
(custom)
|
|
| Microsoft | Windows 10 Version 1607 |
Affected:
10.0.14393.0 , < 10.0.14393.7969
(custom)
|
|
| Microsoft | Windows 10 Version 1809 |
Affected:
10.0.17763.0 , < 10.0.17763.7136
(custom)
|
|
| Microsoft | Windows 10 Version 21H2 |
Affected:
10.0.19044.0 , < 10.0.19044.5737
(custom)
|
|
| Microsoft | Windows 10 Version 22H2 |
Affected:
10.0.19045.0 , < 10.0.19045.5737
(custom)
|
|
| Microsoft | Windows 11 version 22H2 |
Affected:
10.0.22621.0 , < 10.0.22621.5189
(custom)
|
|
| Microsoft | Windows 11 version 22H3 |
Affected:
10.0.22631.0 , < 10.0.22631.5189
(custom)
|
|
| Microsoft | Windows 11 Version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.5189
(custom)
|
|
| Microsoft | Windows 11 Version 24H2 |
Affected:
10.0.26100.0 , < 10.0.26100.3775
(custom)
|
|
| Microsoft | Windows Server 2008 R2 Service Pack 1 |
Affected:
6.1.7601.0 , < 6.1.7601.27670
(custom)
|
|
| Microsoft | Windows Server 2008 R2 Service Pack 1 (Server Core installation) |
Affected:
6.1.7601.0 , < 6.1.7601.27670
(custom)
|
|
| Microsoft | Windows Server 2008 Service Pack 2 |
Affected:
6.0.6003.0 , < 6.0.6003.23220
(custom)
|
|
| Microsoft | Windows Server 2008 Service Pack 2 (Server Core installation) |
Affected:
6.0.6003.0 , < 6.0.6003.23220
(custom)
|
|
| Microsoft | Windows Server 2012 |
Affected:
6.2.9200.0 , < 6.2.9200.25423
(custom)
|
|
| Microsoft | Windows Server 2012 (Server Core installation) |
Affected:
6.2.9200.0 , < 6.2.9200.25423
(custom)
|
|
| Microsoft | Windows Server 2012 R2 |
Affected:
6.3.9600.0 , < 6.3.9600.22523
(custom)
|
|
| Microsoft | Windows Server 2012 R2 (Server Core installation) |
Affected:
6.3.9600.0 , < 6.3.9600.22523
(custom)
|
|
| Microsoft | Windows Server 2016 |
Affected:
10.0.14393.0 , < 10.0.14393.7969
(custom)
|
|
| Microsoft | Windows Server 2016 (Server Core installation) |
Affected:
10.0.14393.0 , < 10.0.14393.7969
(custom)
|
|
| Microsoft | Windows Server 2019 |
Affected:
10.0.17763.0 , < 10.0.17763.7136
(custom)
|
|
| Microsoft | Windows Server 2019 (Server Core installation) |
Affected:
10.0.17763.0 , < 10.0.17763.7136
(custom)
|
|
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.3453
(custom)
|
|
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) |
Affected:
10.0.25398.0 , < 10.0.25398.1551
(custom)
|
|
| Microsoft | Windows Server 2025 |
Affected:
10.0.26100.0 , < 10.0.26100.3775
(custom)
|
|
| Microsoft | Windows Server 2025 (Server Core installation) |
Affected:
10.0.26100.0 , < 10.0.26100.3775
(custom)
|
Date Public
2025-04-08 07:00
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CVE-2025-20740 (GCVE-0-2025-20740)
Vulnerability from cvelistv5 – Published: 2025-11-04 06:19 – Updated: 2025-11-04 15:04
VLAI
EPSS
VEX
Summary
In wlan STA driver, there is a possible out of bounds read due to a race condition. This could lead to local information disclosure with User execution privileges needed. User interaction is not needed for exploitation. Patch ID: WCNCR00435337; Issue ID: MSV-4036.
Severity
4.7 (Medium)
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
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| MediaTek, Inc. | MT7902, MT7920, MT7921, MT7922, MT7925, MT7927 |
Affected:
NB SDK release 3.7 and before
|
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CVE-2025-20082 (GCVE-0-2025-20082)
Vulnerability from cvelistv5 – Published: 2025-05-13 21:02 – Updated: 2026-02-26 18:28
VLAI
EPSS
VEX
Summary
Time-of-check time-of-use race condition in the UEFI firmware SmiVariable driver for the Intel(R) Server D50DNP and M50FCP boards may allow a privileged user to enable escalation of privilege via local access.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- Escalation of Privilege
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Intel(R) Server D50DNP and M50FCP boards |
Affected:
See references
|
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CVE-2025-20074 (GCVE-0-2025-20074)
Vulnerability from cvelistv5 – Published: 2025-08-12 16:58 – Updated: 2026-02-26 17:49
VLAI
EPSS
VEX
Summary
Time-of-check Time-of-use race condition for some Intel(R) Connectivity Performance Suite software installers before version 40.24.11210 may allow an authenticated user to potentially enable escalation of privilege via local access.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- Escalation of Privilege
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Intel(R) Connectivity Performance Suite software installers |
Affected:
before version 40.24.11210
|
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CVE-2025-20037 (GCVE-0-2025-20037)
Vulnerability from cvelistv5 – Published: 2025-08-12 16:57 – Updated: 2026-02-26 17:49
VLAI
EPSS
VEX
Summary
Time-of-check time-of-use race condition in firmware for some Intel(R) Converged Security and Management Engine may allow a privileged user to potentially enable escalation of privilege via local access.
Severity
7.2 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- Escalation of Privilege
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Intel(R) Converged Security and Management Engine |
Affected:
See references
|
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CVE-2025-20028 (GCVE-0-2025-20028)
Vulnerability from cvelistv5 – Published: 2026-03-10 22:49 – Updated: 2026-03-12 03:55
VLAI
EPSS
VEX
Summary
Time-of-check time-of-use race condition in the WheaERST SMM module for some Intel(R) reference platforms may allow an escalation of privilege. System software adversary with a privileged user combined with a high complexity attack may enable escalation of privilege. This result may potentially occur via local access when attack requirements are present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (high), integrity (high) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- Escalation of Privilege
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
1 reference
Impacted products
1 product
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"cveId": "CVE-2025-20028",
"datePublished": "2026-03-10T22:49:16.870Z",
"dateReserved": "2024-10-10T03:00:11.122Z",
"dateUpdated": "2026-03-12T03:55:39.715Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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.