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-2024-23463 (GCVE-0-2024-23463)
Vulnerability from cvelistv5 – Published: 2024-04-30 16:17 – Updated: 2024-08-29 19:20
VLAI
EPSS
VEX
Title
Anti-Tampering bypass via Repair App functionality
Summary
Anti-tampering protection of the Zscaler Client Connector can be bypassed under certain conditions when running the Repair App functionality. This affects Zscaler Client Connector on Windows prior to 4.2.1
Severity
8.8 (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
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Zscaler | Client Connector |
Affected:
0 , < 4.2.1
(custom)
|
|
| zscaler | client_connector |
Affected:
0 , < 4.2.1
(custom)
cpe:2.3:a:zscaler:client_connector:*:*:*:*:*:windows:*:* |
Credits
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CVE-2024-22185 (GCVE-0-2024-22185)
Vulnerability from cvelistv5 – Published: 2024-11-13 21:02 – Updated: 2024-11-14 19:47
VLAI
EPSS
VEX
Summary
Time-of-check Time-of-use Race Condition in some Intel(R) processors with Intel(R) ACTM 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 Race Condition
Assigner
References
1 reference
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Intel(R) processors with Intel(R) ACTM |
Affected:
See references
|
|
| intel | 4th_generation_intel_xeon_processor_scalable_family |
Affected:
806f8
cpe:2.3:h:intel:4th_generation_intel_xeon_processor_scalable_family:806f8:*:*:*:*:*:*:* |
|
| intel | 5th_generation_intel_xeon_processor_scalable_family |
Affected:
c06f2
cpe:2.3:h:intel:5th_generation_intel_xeon_processor_scalable_family:c06f2:*:*:*:*:*:*:* |
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CVE-2024-21792 (GCVE-0-2024-21792)
Vulnerability from cvelistv5 – Published: 2024-05-16 20:46 – Updated: 2024-08-01 22:27
VLAI
EPSS
VEX
Summary
Time-of-check Time-of-use race condition in Intel(R) Neural Compressor software before version 2.5.0 may allow an authenticated user to potentially enable information disclosure via local access.
Severity
4.7 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- information disclosure
- CWE-367 - Time-of-check Time-of-use race condition
Assigner
References
1 reference
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Intel(R) Neural Compressor software |
Affected:
before version 2.5.0
|
|
| intel | neural_compressor_software |
Affected:
- , < 2.5.0
(semver)
cpe:2.3:a:intel:neural_compressor_software:-:*:*:*:*:*:*:* |
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CVE-2024-21433 (GCVE-0-2024-21433)
Vulnerability from cvelistv5 – Published: 2024-03-12 16:58 – Updated: 2025-05-03 00:46
VLAI
EPSS
VEX
Title
Windows Print Spooler Elevation of Privilege Vulnerability
Summary
Windows Print Spooler 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
20 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 10 Version 1809 |
Affected:
10.0.17763.0 , < 10.0.17763.5576
(custom)
|
|
| Microsoft | Windows 10 Version 1809 |
Affected:
10.0.0 , < 10.0.17763.5576
(custom)
|
|
| Microsoft | Windows Server 2019 |
Affected:
10.0.17763.0 , < 10.0.17763.5576
(custom)
|
|
| Microsoft | Windows Server 2019 (Server Core installation) |
Affected:
10.0.17763.0 , < 10.0.17763.5576
(custom)
|
|
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.2340
(custom)
|
|
| Microsoft | Windows 11 version 21H2 |
Affected:
10.0.0 , < 10.0.22000.2836
(custom)
|
|
| Microsoft | Windows 10 Version 21H2 |
Affected:
10.0.19043.0 , < 10.0.19044.4170
(custom)
|
|
| Microsoft | Windows 11 version 22H2 |
Affected:
10.0.22621.0 , < 10.0.22621.3296
(custom)
|
|
| Microsoft | Windows 10 Version 22H2 |
Affected:
10.0.19045.0 , < 10.0.19045.4170
(custom)
|
|
| Microsoft | Windows 11 version 22H3 |
Affected:
10.0.22631.0 , < 10.0.22631.3296
(custom)
|
|
| Microsoft | Windows 11 Version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.3296
(custom)
|
|
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) |
Affected:
10.0.25398.0 , < 10.0.25398.763
(custom)
|
|
| Microsoft | Windows 10 Version 1507 |
Affected:
10.0.10240.0 , < 10.0.10240.20526
(custom)
|
|
| Microsoft | Windows 10 Version 1607 |
Affected:
10.0.14393.0 , < 10.0.14393.6796
(custom)
|
|
| Microsoft | Windows Server 2016 |
Affected:
10.0.14393.0 , < 10.0.14393.6796
(custom)
|
|
| Microsoft | Windows Server 2016 (Server Core installation) |
Affected:
10.0.14393.0 , < 10.0.14393.6796
(custom)
|
|
| Microsoft | Windows Server 2012 |
Affected:
6.2.9200.0 , < 6.2.9200.24768
(custom)
|
|
| Microsoft | Windows Server 2012 (Server Core installation) |
Affected:
6.2.9200.0 , < 6.2.9200.24768
(custom)
|
|
| Microsoft | Windows Server 2012 R2 |
Affected:
6.3.9600.0 , < 6.3.9600.21871
(custom)
|
|
| Microsoft | Windows Server 2012 R2 (Server Core installation) |
Affected:
6.3.9600.0 , < 6.3.9600.21871
(custom)
|
Date Public
2024-03-12 07:00
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CVE-2024-21371 (GCVE-0-2024-21371)
Vulnerability from cvelistv5 – Published: 2024-02-13 18:02 – Updated: 2025-05-09 18:23
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-advisory |
Impacted products
20 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 10 Version 1809 |
Affected:
10.0.17763.0 , < 10.0.17763.5458
(custom)
|
|
| Microsoft | Windows 10 Version 1809 |
Affected:
10.0.0 , < 10.0.17763.5458
(custom)
|
|
| Microsoft | Windows Server 2019 |
Affected:
10.0.17763.0 , < 10.0.17763.5458
(custom)
|
|
| Microsoft | Windows Server 2019 (Server Core installation) |
Affected:
10.0.17763.0 , < 10.0.17763.5458
(custom)
|
|
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.2322
(custom)
|
|
| Microsoft | Windows 11 version 21H2 |
Affected:
10.0.0 , < 10.0.22000.2777
(custom)
|
|
| Microsoft | Windows 10 Version 21H2 |
Affected:
10.0.19043.0 , < 10.0.19044.4046
(custom)
|
|
| Microsoft | Windows 11 version 22H2 |
Affected:
10.0.22621.0 , < 10.0.22621.3155
(custom)
|
|
| Microsoft | Windows 10 Version 22H2 |
Affected:
10.0.19045.0 , < 10.0.19045.4046
(custom)
|
|
| Microsoft | Windows 11 version 22H3 |
Affected:
10.0.22631.0 , < 10.0.22631.3155
(custom)
|
|
| Microsoft | Windows 11 Version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.3155
(custom)
|
|
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) |
Affected:
10.0.25398.0 , < 10.0.25398.709
(custom)
|
|
| Microsoft | Windows 10 Version 1507 |
Affected:
10.0.10240.0 , < 10.0.10240.20469
(custom)
|
|
| Microsoft | Windows 10 Version 1607 |
Affected:
10.0.14393.0 , < 10.0.14393.6709
(custom)
|
|
| Microsoft | Windows Server 2016 |
Affected:
10.0.14393.0 , < 10.0.14393.6709
(custom)
|
|
| Microsoft | Windows Server 2016 (Server Core installation) |
Affected:
10.0.14393.0 , < 10.0.14393.6709
(custom)
|
|
| Microsoft | Windows Server 2012 |
Affected:
6.2.9200.0 , < 6.2.9200.24710
(custom)
|
|
| Microsoft | Windows Server 2012 (Server Core installation) |
Affected:
6.2.9200.0 , < 6.2.9200.24710
(custom)
|
|
| Microsoft | Windows Server 2012 R2 |
Affected:
6.3.9600.0 , < 6.3.9600.21813
(custom)
|
|
| Microsoft | Windows Server 2012 R2 (Server Core installation) |
Affected:
6.3.9600.0 , < 6.3.9600.21813
(custom)
|
Date Public
2024-02-13 08:00
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CVE-2024-21362 (GCVE-0-2024-21362)
Vulnerability from cvelistv5 – Published: 2024-02-13 18:02 – Updated: 2025-05-03 01:37
VLAI
EPSS
VEX
Title
Windows Kernel Security Feature Bypass Vulnerability
Summary
Windows Kernel Security Feature Bypass 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
16 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 10 Version 1809 |
Affected:
10.0.17763.0 , < 10.0.17763.5458
(custom)
|
|
| Microsoft | Windows 10 Version 1809 |
Affected:
10.0.0 , < 10.0.17763.5458
(custom)
|
|
| Microsoft | Windows Server 2019 |
Affected:
10.0.17763.0 , < 10.0.17763.5458
(custom)
|
|
| Microsoft | Windows Server 2019 (Server Core installation) |
Affected:
10.0.17763.0 , < 10.0.17763.5458
(custom)
|
|
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.2322
(custom)
|
|
| Microsoft | Windows 11 version 21H2 |
Affected:
10.0.0 , < 10.0.22000.2777
(custom)
|
|
| Microsoft | Windows 10 Version 21H2 |
Affected:
10.0.19043.0 , < 10.0.19044.4046
(custom)
|
|
| Microsoft | Windows 11 version 22H2 |
Affected:
10.0.22621.0 , < 10.0.22621.3155
(custom)
|
|
| Microsoft | Windows 10 Version 22H2 |
Affected:
10.0.19045.0 , < 10.0.19045.4046
(custom)
|
|
| Microsoft | Windows 11 version 22H3 |
Affected:
10.0.22631.0 , < 10.0.22631.3155
(custom)
|
|
| Microsoft | Windows 11 Version 23H2 |
Affected:
10.0.22631.0 , < 10.0.22631.3155
(custom)
|
|
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) |
Affected:
10.0.25398.0 , < 10.0.25398.709
(custom)
|
|
| Microsoft | Windows 10 Version 1507 |
Affected:
10.0.10240.0 , < 10.0.10240.20469
(custom)
|
|
| Microsoft | Windows 10 Version 1607 |
Affected:
10.0.14393.0 , < 10.0.14393.6709
(custom)
|
|
| Microsoft | Windows Server 2016 |
Affected:
10.0.14393.0 , < 10.0.14393.6709
(custom)
|
|
| Microsoft | Windows Server 2016 (Server Core installation) |
Affected:
10.0.14393.0 , < 10.0.14393.6709
(custom)
|
Date Public
2024-02-13 08:00
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CVE-2024-13961 (GCVE-0-2024-13961)
Vulnerability from cvelistv5 – Published: 2025-05-09 15:20 – Updated: 2025-05-09 17:38
VLAI
EPSS
VEX
Title
Avast Cleanup Premium TuneupSvc Link Following Local Privilege Escalation Vulnerability
Summary
Link Following Local Privilege Escalation Vulnerability in TuneupSvc in Avast Cleanup Premium Version 24.2.16593.17810 on Windows 10 Pro x64 allows local attackers to escalate privileges and execute arbitrary code in the context of SYSTEM via creating a symbolic link and leveraging a TOCTTOU (time-of-check to time-of-use) attack.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Avast | CleanUp Premium |
Affected:
24.2.16593.17810
Unaffected: 24.3.17165.19178 |
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CVE-2024-13960 (GCVE-0-2024-13960)
Vulnerability from cvelistv5 – Published: 2025-05-09 15:20 – Updated: 2025-05-09 18:54
VLAI
EPSS
VEX
Title
Link Following Local Privilege Escalation Vulnerability in AVG TuneUp Version 23.4
Summary
Link Following Local Privilege Escalation Vulnerability in TuneUp Service in AVG TuneUp Version 23.4 (build 15592) on Windows 10 allows local attackers to escalate privileges and execute arbitrary code in the context of SYSTEM via creating a symbolic link and leveraging a TOCTTOU (time-of-check to time-of-use) attack.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
Impacted products
Credits
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CVE-2024-13944 (GCVE-0-2024-13944)
Vulnerability from cvelistv5 – Published: 2025-05-09 15:18 – Updated: 2025-10-13 09:52
VLAI
EPSS
VEX
Title
Link Following Local Privilege Escalation Vulnerability in NortonUtilitiesSvc in Norton Utilities Ultimate (Also affects Avast CleanUp and AVG TuneUp)
Summary
Link Following Local Privilege Escalation Vulnerability in NortonUtilitiesSvc in Norton Utilities Ultimate Version 24.2.16862.6344 on Windows 10 Pro x64 allows local attackers to escalate privileges and execute arbitrary code in the context of SYSTEM via the creation of a symbolic link and leveraging a TOCTTOU (time-of-check to time-of-use) attack.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
Impacted products
Credits
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CVE-2024-10972 (GCVE-0-2024-10972)
Vulnerability from cvelistv5 – Published: 2024-12-16 14:49 – Updated: 2025-09-05 08:40
VLAI
EPSS
VEX
Title
WinPmem Improper Input Validation vulnerability
Summary
Velocidex WinPmem versions 4.1 and below suffer from an Improper Input Validation vulnerability whereby an attacker with admin access can trigger a BSOD with a parallel thread changing the memory’s access right under the control of the user-mode application. This is due to verification only being performed at the beginning of the routine allowing the userspace to change page permissions half way through the routine. A valid workaround is a rule to detect unauthorized loading of winpmem outside incident response operations.
Severity
7.3 (High)
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
Date Public
2024-12-16 14:45
Credits
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"cveMetadata": {
"assignerOrgId": "9974b330-7714-4307-a722-5648477acda7",
"assignerShortName": "rapid7",
"cveId": "CVE-2024-10972",
"datePublished": "2024-12-16T14:49:07.294Z",
"dateReserved": "2024-11-07T16:33:46.948Z",
"dateUpdated": "2025-09-05T08:40:18.985Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
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.