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.
1284 vulnerabilities reference this CWE, most recent first.
CVE-2023-21537 (GCVE-0-2023-21537)
Vulnerability from cvelistv5 – Published: 2023-01-10 00:00 – Updated: 2025-01-01 00:36
VLAI
EPSS
VEX
Title
Microsoft Message Queuing (MSMQ) Elevation of Privilege Vulnerability
Summary
Microsoft Message Queuing (MSMQ) Elevation of Privilege Vulnerability
Severity
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
26 products
| Vendor | Product | Version | |
|---|---|---|---|
| Microsoft | Windows 10 Version 1809 |
Affected:
10.0.17763.0 , < 10.0.17763.3887
(custom)
|
|
| Microsoft | Windows 10 Version 1809 |
Affected:
10.0.0 , < 10.0.17763.3887
(custom)
|
|
| Microsoft | Windows Server 2019 |
Affected:
10.0.17763.0 , < 10.0.17763.3887
(custom)
|
|
| Microsoft | Windows Server 2019 (Server Core installation) |
Affected:
10.0.17763.0 , < 10.0.17763.3887
(custom)
|
|
| Microsoft | Windows Server 2022 |
Affected:
10.0.20348.0 , < 10.0.20348.1487
(custom)
|
|
| Microsoft | Windows 10 Version 20H2 |
Affected:
10.0.0 , < 10.0.19042.2486
(custom)
|
|
| Microsoft | Windows 11 version 21H2 |
Affected:
10.0.0 , < 10.0.22000.1455
(custom)
|
|
| Microsoft | Windows 10 Version 21H2 |
Affected:
10.0.19043.0 , < 10.0.19044.2486
(custom)
|
|
| Microsoft | Windows 11 version 22H2 |
Affected:
10.0.22621.0 , < 10.0.22621.1105
(custom)
|
|
| Microsoft | Windows 10 Version 22H2 |
Affected:
10.0.19045.0 , < 10.0.19045.2486
(custom)
|
|
| Microsoft | Windows 10 Version 1507 |
Affected:
10.0.10240.0 , < 10.0.10240.19685
(custom)
|
|
| Microsoft | Windows 10 Version 1607 |
Affected:
10.0.14393.0 , < 10.0.14393.5648
(custom)
|
|
| Microsoft | Windows Server 2016 |
Affected:
10.0.14393.0 , < 10.0.14393.5648
(custom)
|
|
| Microsoft | Windows Server 2016 (Server Core installation) |
Affected:
10.0.14393.0 , < 10.0.14393.5648
(custom)
|
|
| Microsoft | Windows 7 |
Affected:
6.1.0 , < 6.1.7601.26321
(custom)
|
|
| Microsoft | Windows 7 Service Pack 1 |
Affected:
6.1.0 , < 6.1.7601.26321
(custom)
|
|
| Microsoft | Windows 8.1 |
Affected:
6.3.0 , < 6.3.9600.20778
(custom)
|
|
| Microsoft | Windows Server 2008 Service Pack 2 |
Affected:
6.0.6003.0 , < 6.0.6003.21872
(custom)
|
|
| Microsoft | Windows Server 2008 Service Pack 2 (Server Core installation) |
Affected:
6.0.6003.0 , < 6.0.6003.21872
(custom)
|
|
| Microsoft | Windows Server 2008 Service Pack 2 |
Affected:
6.0.6003.0 , < 6.0.6003.21872
(custom)
|
|
| Microsoft | Windows Server 2008 R2 Service Pack 1 |
Affected:
6.1.7601.0 , < 6.1.7601.26321
(custom)
|
|
| Microsoft | Windows Server 2008 R2 Service Pack 1 (Server Core installation) |
Affected:
6.1.7601.0 , < 6.1.7601.26321
(custom)
|
|
| Microsoft | Windows Server 2012 |
Affected:
6.2.9200.0 , < 6.2.9200.24075
(custom)
|
|
| Microsoft | Windows Server 2012 (Server Core installation) |
Affected:
6.2.9200.0 , < 6.2.9200.24075
(custom)
|
|
| Microsoft | Windows Server 2012 R2 |
Affected:
6.3.9600.0 , < 6.3.9600.20778
(custom)
|
|
| Microsoft | Windows Server 2012 R2 (Server Core installation) |
Affected:
6.3.9600.0 , < 6.3.9600.20778
(custom)
|
Date Public
2023-01-10 08:00
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CVE-2023-20548 (GCVE-0-2023-20548)
Vulnerability from cvelistv5 – Published: 2026-02-11 14:35 – Updated: 2026-02-11 15:42
VLAI
EPSS
VEX
Summary
A Time-of-check time-of-use (TOCTOU) race condition in the AMD Secure Processor (ASP) could allow an attacker to corrupt memory resulting in loss of integrity, confidentiality, or availability.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-11 15:36 UTC
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
1 reference
Impacted products
8 products
| Vendor | Product | Version | |
|---|---|---|---|
| AMD | AMD Radeon™ RX 5000 Series Graphics Products |
Unaffected:
AMD Software: Adrenalin Edition 25.6.1 (25.10.13.01), AMD Software: PRO Edition 25.Q2 (25.10.10)
|
|
| AMD | AMD Radeon™ PRO W5000 Series Graphics Products |
Unaffected:
AMD Software: Adrenalin Edition 25.6.1 (25.10.13.01), AMD Software: PRO Edition 25.Q2 (25.10.10)
|
|
| AMD | AMD Radeon™ VII |
Unaffected:
No fix planned
|
|
| AMD | AMD Radeon™ PRO VII |
Unaffected:
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|
|
| AMD | AMD Instinct™ MI210 |
Unaffected:
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|
|
| AMD | AMD Instinct™ MI250 |
Unaffected:
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|
|
| AMD | AMD Instinct™ MI300X |
Unaffected:
ROCm 6.2
|
|
| AMD | AMD Instinct™ MI300A |
Unaffected:
ROCm 6.2
|
Date Public
2026-02-11 14:11
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CVE-2023-6917 (GCVE-0-2023-6917)
Vulnerability from cvelistv5 – Published: 2024-02-28 14:38 – Updated: 2026-02-25 18:20
VLAI
EPSS
VEX
Title
Pcp: unsafe use of directories allows pcp to root privilege escalation
Summary
A vulnerability has been identified in the Performance Co-Pilot (PCP) package, stemming from the mixed privilege levels utilized by systemd services associated with PCP. While certain services operate within the confines of limited PCP user/group privileges, others are granted full root privileges. This disparity in privilege levels poses a risk when privileged root processes interact with directories or directory trees owned by unprivileged PCP users. Specifically, this vulnerability may lead to the compromise of PCP user isolation and facilitate local PCP-to-root exploits, particularly through symlink attacks. These vulnerabilities underscore the importance of maintaining robust privilege separation mechanisms within PCP to mitigate the potential for unauthorized privilege escalation.
Severity
6 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-02-28 20:00 UTC
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2024:2213 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/security/cve/CVE-2023-6917 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2254983 | issue-trackingx_refsource_REDHAT |
Impacted products
4 products
| Vendor | Product | Version | |
|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:6.2.0-1.el9 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9::appstream |
|
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6
|
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7
|
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8
|
Date Public
2024-02-15 00:00
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CVE-2023-6803 (GCVE-0-2023-6803)
Vulnerability from cvelistv5 – Published: 2023-12-21 20:45 – Updated: 2024-08-02 08:42
VLAI
EPSS
VEX
Title
Race Condition allows Unauthorized Outside Collaborator
Summary
A race condition in GitHub Enterprise Server allows an outside collaborator to be added while a repository is being transferred. This vulnerability affected all versions of GitHub Enterprise Server since 3.8 and was fixed in version 3.8.12, 3.9.7, 3.10.4, and 3.11.1.
Severity
5.8 (Medium)
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| GitHub | Enterprise Server |
Affected:
3.8 , ≤ 3.8.11
(semver)
Affected: 3.9 , ≤ 3.9.6 (semver) Affected: 3.10 , ≤ 3.10.3 (semver) Affected: 3.11 , ≤ 3.11.0 (semver) |
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CVE-2023-6690 (GCVE-0-2023-6690)
Vulnerability from cvelistv5 – Published: 2023-12-21 20:45 – Updated: 2024-08-02 08:35
VLAI
EPSS
VEX
Summary
A race condition in GitHub Enterprise Server allowed an existing admin to maintain permissions on transferred repositories by making a GraphQL mutation to alter repository permissions during the transfer. This vulnerability affected GitHub Enterprise Server version 3.8.0 and above and was fixed in version 3.8.12, 3.9.7, 3.10.4, and 3.11.1.
Severity
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| GitHub | Enterprise Server |
Affected:
3.8 , ≤ 3.8.11
(semver)
Affected: 3.9 , ≤ 3.9.6 (semver) Affected: 3.10 , ≤ 3.10.3 (semver) Affected: 3.11 , ≤ 3.11.0 (semver) |
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CVE-2023-5760 (GCVE-0-2023-5760)
Vulnerability from cvelistv5 – Published: 2023-11-08 16:36 – Updated: 2024-09-03 20:20
VLAI
EPSS
VEX
Title
Time-of-check to time-of-use (TOCTOU) bug leads to full local privilege escalation.
Summary
A time-of-check to time-of-use (TOCTOU) bug in handling of IOCTL (input/output control) requests. This TOCTOU bug leads to an out-of-bounds write vulnerability which can be further exploited, allowing an attacker to gain full local privilege escalation on the system.This issue affects Avast/Avg Antivirus: 23.8.
Severity
8.2 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-03 20:19 UTC
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Avast/AVG | Avast/Avg Antivirus |
Affected:
23.8
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CVE-2023-4155 (GCVE-0-2023-4155)
Vulnerability from cvelistv5 – Published: 2023-09-13 16:11 – Updated: 2025-02-27 20:52
VLAI
EPSS
VEX
Title
Sev-es / sev-snp vmgexit double fetch vulnerability
Summary
A flaw was found in KVM AMD Secure Encrypted Virtualization (SEV) in the Linux kernel. A KVM guest using SEV-ES or SEV-SNP with multiple vCPUs can trigger a double fetch race condition vulnerability and invoke the `VMGEXIT` handler recursively. If an attacker manages to call the handler multiple times, they can trigger a stack overflow and cause a denial of service or potentially guest-to-host escape in kernel configurations without stack guard pages (`CONFIG_VMAP_STACK`).
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-26 21:49 UTC
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://access.redhat.com/security/cve/CVE-2023-4155 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2213802 | issue-trackingx_refsource_REDHAT |
Impacted products
6 products
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | kernel | ||
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6
|
|
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7
|
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8
|
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9
|
|
| Fedora | Fedora |
Date Public
2023-08-04 00:00
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CVE-2023-3891 (GCVE-0-2023-3891)
Vulnerability from cvelistv5 – Published: 2023-09-15 02:07 – Updated: 2025-09-25 17:22
VLAI
EPSS
VEX
Title
Lapce v0.2.8 - Privilege escalation via Race Condition
Summary
Race condition in Lapce v0.2.8 allows an attacker to elevate privileges on the system
Severity
7.3 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-25 13:25 UTC
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://fluidattacks.com/advisories/aerosmith | third-party-advisory |
| https://lapce.dev | product |
| https://github.com/lapce/lapce/releases/tag/v0.3.0 | patch |
Impacted products
Date Public
2023-09-15 02:06
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CVE-2023-2007 (GCVE-0-2023-2007)
Vulnerability from cvelistv5 – Published: 2023-04-24 00:00 – Updated: 2024-08-02 06:05
VLAI
EPSS
VEX
Summary
The specific flaw exists within the DPT I2O Controller driver. The issue results from the lack of proper locking when performing operations on an object. An attacker can leverage this in conjunction with other vulnerabilities to escalate privileges and execute arbitrary code in the context of the kernel.
Severity
No CVSS data available.
CWE
Assigner
References
5 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| n/a | Linux kernel's DPT I2O Controller driver |
Affected:
Fixed in kernel v6.0-rc1
|
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CVE-2023-1586 (GCVE-0-2023-1586)
Vulnerability from cvelistv5 – Published: 2023-04-19 18:35 – Updated: 2025-02-05 16:16
VLAI
EPSS
VEX
Summary
Avast and AVG Antivirus for Windows were susceptible to a Time-of-check/Time-of-use (TOCTOU) vulnerability in the restore process leading to arbitrary file creation. The issue was fixed with Avast and AVG Antivirus version 22.11
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-02-05 16:15 UTC
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
1 reference
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Avast | Avast Antivirus |
Affected:
22.5 , ≤ 22.10
(22.11)
|
|
| AVG | AVG Antivirus |
Affected:
22.5 , ≤ 22.10
(22.11)
|
Date Public
2023-04-20 19:00
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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.