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-2022-24413 (GCVE-0-2022-24413)
Vulnerability from cvelistv5 – Published: 2022-04-12 17:50 – Updated: 2024-09-17 04:03
VLAI
EPSS
VEX
Summary
Dell PowerScale OneFS, versions 8.2.2-9.3.x, contain a time-of-check-to-time-of-use vulnerability. A local user with access to the filesystem could potentially exploit this vulnerability, leading to data loss.
Severity
4.4 (Medium)
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.dell.com/support/kbdoc/000196657 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Dell | PowerScale OneFS |
Affected:
8.2.2-9.3.x
|
Date Public
2022-03-03 00:00
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CVE-2022-23826 (GCVE-0-2022-23826)
Vulnerability from cvelistv5 – Published: 2026-05-15 02:30 – Updated: 2026-05-15 13:20
VLAI
EPSS
VEX
Summary
A TOCTOU (Time-Of-Check to Time-Of-Use) in the graphics interface may allow an attacker to load registers repeatedly creating a race condition potentially leading to a loss of integrity.
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
Impacted products
21 products
| Vendor | Product | Version | |
|---|---|---|---|
| AMD | AMD Ryzen™ 3000 Series Mobile Processors with Radeon™ Graphics |
Unaffected:
PicassoPI-FP5 1.0.0.E
|
|
| AMD | AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics |
Unaffected:
PicassoPI-FP5 1.0.0.E
|
|
| AMD | AMD Athlon™ 3000 Series Desktop Processors with Radeon™ Graphics |
Unaffected:
ComboAM4v2 PI 1.2.0.8
|
|
| AMD | AMD Ryzen™ Embedded R1000 Series Processors |
Unaffected:
EmbeddedPI-FP5_1.2.0.A
|
|
| AMD | AMD Ryzen™ Embedded R2000 Series Processors |
Unaffected:
EmbeddedR2KPI-FP5_1.0.0.2
|
|
| AMD | AMD Ryzen™ Embedded V1000 Series Processors (formerly codenamed "Raven Ridge") |
Unaffected:
EmbeddedPI-FP5_1.2.0.A
|
|
| AMD | AMD Ryzen™ Embedded V1000 Series Processors (formerly codenamed "Picasso") |
Unaffected:
120A
|
|
| AMD | AMD Radeon™ RX 5000 Series Graphics Products |
Unaffected:
AMD Software: Adrenalin Edition 25.5.1 (25.10.01.09)
|
|
| AMD | AMD Radeon™ PRO W5000 Series Graphics Products |
Unaffected:
AMD Software: PRO Edition 25.Q2 (25.10.10)
|
|
| AMD | AMD Radeon™ RX 6000 Series Graphics Products |
Unaffected:
AMD Software: Adrenalin Edition 25.5.1 (25.10.01.09)
|
|
| AMD | AMD Radeon™ VII |
Unaffected:
AMD Software: Adrenalin Edition 25.5.1 (23.19.23.01 pre-RDNA)
|
|
| AMD | AMD Radeon™ RX Vega Series Graphics Cards |
Unaffected:
AMD Software: Adrenalin Edition 25.5.1 (23.19.23.01 pre-RDNA)
|
|
| AMD | AMD Radeon™ PRO W6000 Series Graphics Product |
Unaffected:
AMD Software: PRO Edition 25.Q2 (25.10.10)
|
|
| AMD | AMD Radeon™ PRO W6000 Series Graphics Products |
Unaffected:
AMD Software: PRO Edition 25.Q2 (25.10.10)
|
|
| AMD | AMD Radeon™ PRO WX 8000/9000 Series Graphics Cards |
Unaffected:
AMD Software: PRO Edition 25.Q2 (23.19.23.01 pre-RDNA)
|
|
| AMD | AMD Radeon™ PRO VII |
Unaffected:
AMD Software: PRO Edition 25.Q2 (23.19.23.01 pre-RDNA)
|
|
| AMD | AMD Instinct™ MI250 |
Unaffected:
ROCm 6.4.2
|
|
| AMD | AMD Instinct™ MI210 |
Unaffected:
ROCm 6.4.2
|
|
| AMD | AMD Radeon™ Instinct™ MI25 |
Unaffected:
Contact your AMD Customer Engineering representative
|
|
| AMD | AMD Radeon™ PRO V520 |
Unaffected:
Contact your AMD Customer Engineering representative
|
|
| AMD | AMD Radeon™ PRO V620 |
Unaffected:
Contact your AMD Customer Engineering representative
|
Date Public
2026-05-15 02:29
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CVE-2022-23653 (GCVE-0-2022-23653)
Vulnerability from cvelistv5 – Published: 2022-02-23 23:05 – Updated: 2025-04-23 19:00
VLAI
EPSS
VEX
Title
B2 Command Line Tool TOCTOU application key disclosure
Summary
B2 Command Line Tool is the official command line tool for the backblaze cloud storage service. Linux and Mac releases of the B2 command-line tool version 3.2.0 and below contain a key disclosure vulnerability that, in certain conditions, can be exploited by local attackers through a time-of-check-time-of-use (TOCTOU) race condition. The command line tool saves API keys (and bucket name-to-id mapping) in a local database file (`$XDG_CONFIG_HOME/b2/account_info`, `~/.b2_account_info` or a user-defined path) when `b2 authorize-account` is first run. This happens regardless of whether a valid key is provided or not. When first created, the file is world readable and is (typically a few milliseconds) later altered to be private to the user. If the directory is readable by a local attacker and the user did not yet run `b2 authorize-account` then during the brief period between file creation and permission modification, a local attacker can race to open the file and maintain a handle to it. This allows the local attacker to read the contents after the file after the sensitive information has been saved to it. Users that have not yet run `b2 authorize-account` should upgrade to B2 Command-Line Tool v3.2.1 before running it. Users that have run `b2 authorize-account` are safe if at the time of the file creation no other local users had read access to the local configuration file. Users that have run `b2 authorize-account` where the designated path could be opened by another local user should upgrade to B2 Command-Line Tool v3.2.1 and remove the database and regenerate all application keys. Note that `b2 clear-account` does not remove the database file and it should not be used to ensure that all open handles to the file are invalidated. If B2 Command-Line Tool cannot be upgraded to v3.2.1 due to a dependency conflict, a binary release can be used instead. Alternatively a new version could be installed within a virtualenv, or the permissions can be changed to prevent local users from opening the database file.
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
2 references
| URL | Tags |
|---|---|
| https://github.com/Backblaze/B2_Command_Line_Tool… | x_refsource_CONFIRM |
| https://github.com/Backblaze/B2_Command_Line_Tool… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Backblaze | B2_Command_Line_Tool |
Affected:
< 3.2.1
|
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CVE-2022-23651 (GCVE-0-2022-23651)
Vulnerability from cvelistv5 – Published: 2022-02-23 22:50 – Updated: 2025-04-23 19:00
VLAI
EPSS
VEX
Title
b2-sdk-python TOCTOU application key disclosure
Summary
b2-sdk-python is a python library to access cloud storage provided by backblaze. Linux and Mac releases of the SDK version 1.14.0 and below contain a key disclosure vulnerability that, in certain conditions, can be exploited by local attackers through a time-of-check-time-of-use (TOCTOU) race condition. SDK users of the SqliteAccountInfo format are vulnerable while users of the InMemoryAccountInfo format are safe. The SqliteAccountInfo saves API keys (and bucket name-to-id mapping) in a local database file ($XDG_CONFIG_HOME/b2/account_info, ~/.b2_account_info or a user-defined path). When first created, the file is world readable and is (typically a few milliseconds) later altered to be private to the user. If the directory containing the file is readable by a local attacker then during the brief period between file creation and permission modification, a local attacker can race to open the file and maintain a handle to it. This allows the local attacker to read the contents after the file after the sensitive information has been saved to it. Consumers of this SDK who rely on it to save data using SqliteAccountInfo class should upgrade to the latest version of the SDK. Those who believe a local user might have opened a handle using this race condition, should remove the affected database files and regenerate all application keys. Users should upgrade to b2-sdk-python 1.14.1 or later.
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
3 references
| URL | Tags |
|---|---|
| https://github.com/Backblaze/b2-sdk-python/securi… | x_refsource_CONFIRM |
| https://github.com/Backblaze/b2-sdk-python/commit… | x_refsource_MISC |
| https://pypi.org/project/b2sdk/ | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Backblaze | b2-sdk-python |
Affected:
< 1.14.1
|
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CVE-2022-23563 (GCVE-0-2022-23563)
Vulnerability from cvelistv5 – Published: 2022-02-04 22:32 – Updated: 2025-04-23 19:07
VLAI
EPSS
VEX
Title
Insecure temporary file in Tensorflow
Summary
Tensorflow is an Open Source Machine Learning Framework. In multiple places, TensorFlow uses `tempfile.mktemp` to create temporary files. While this is acceptable in testing, in utilities and libraries it is dangerous as a different process can create the file between the check for the filename in `mktemp` and the actual creation of the file by a subsequent operation (a TOC/TOU type of weakness). In several instances, TensorFlow was supposed to actually create a temporary directory instead of a file. This logic bug is hidden away by the `mktemp` function usage. We have patched the issue in several commits, replacing `mktemp` with the safer `mkstemp`/`mkdtemp` functions, according to the usage pattern. Users are advised to upgrade as soon as possible.
Severity
7.1 (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
| URL | Tags |
|---|---|
| https://github.com/tensorflow/tensorflow/security… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| tensorflow | tensorflow |
Affected:
>= 2.7.0, < 2.7.1
Affected: >= 2.6.0, < 2.6.3 Affected: < 2.5.3 |
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CVE-2022-23181 (GCVE-0-2022-23181)
Vulnerability from cvelistv5 – Published: 2022-01-27 00:00 – Updated: 2024-08-03 03:36
VLAI
EPSS
VEX
Title
Local privilege escalation with FileStore
Summary
The fix for bug CVE-2020-9484 introduced a time of check, time of use vulnerability into Apache Tomcat 10.1.0-M1 to 10.1.0-M8, 10.0.0-M5 to 10.0.14, 9.0.35 to 9.0.56 and 8.5.55 to 8.5.73 that allowed a local attacker to perform actions with the privileges of the user that the Tomcat process is using. This issue is only exploitable when Tomcat is configured to persist sessions using the FileStore.
Severity
No CVSS data available.
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
6 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Tomcat |
Affected:
Apache Tomcat 10.1 10.1.0-M1 to 10.1.0-M8
Affected: Apache Tomcat 10.0 10.0.0-M5 to 10.0.14 Affected: Apache Tomcat 9 9.0.35 to 9.0.56 Affected: Apache Tomcat 8 8.5.55 to 8.5.73 |
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CVE-2022-23029 (GCVE-0-2022-23029)
Vulnerability from cvelistv5 – Published: 2022-01-25 19:11 – Updated: 2024-08-03 03:28
VLAI
EPSS
VEX
Summary
On BIG-IP version 16.x before 16.1.0, 15.1.x before 15.1.4.1, 14.1.x before 14.1.4.4, and all versions of 13.1.x, 12.1.x, and 11.6.x, when a FastL4 profile is configured on a virtual server, undisclosed traffic can cause an increase in memory resource utilization. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Severity
No CVSS data available.
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://support.f5.com/csp/article/K50343028 | x_refsource_MISC |
Impacted products
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CVE-2022-22225 (GCVE-0-2022-22225)
Vulnerability from cvelistv5 – Published: 2022-10-18 02:46 – Updated: 2025-05-12 14:42
VLAI
EPSS
VEX
Title
Junos OS and Junos OS Evolved: In a BGP multipath scenario, when one of the contributing routes is flapping often and rapidly, rpd may crash
Summary
A Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated attacker with an established BGP session to cause a Denial of Service (DoS). In a BGP multipath scenario, when one of the contributing routes is flapping often and rapidly, rpd may crash. As this crash depends on whether a route is a contributing route, and on the internal timing of the events triggered by the flap this vulnerability is outside the direct control of a potential attacker. This issue affects: Juniper Networks Junos OS 19.2 versions prior to 19.2R3-S6; 20.2 versions prior to 20.2R3-S4; 20.3 versions prior to 20.3R3-S3; 20.4 versions prior to 20.4R3-S4; 21.1 versions prior to 21.1R3; 21.2 versions prior to 21.2R2; 21.3 versions prior to 21.3R2. Juniper Networks Junos OS Evolved All versions prior to 20.4R3-S4-EVO; 21.1-EVO version 21.1R1-EVO and later versions; 21.2-EVO versions prior to 21.2R2-EVO; 21.3-EVO versions prior to 21.3R2-EVO. This issue does not affect: Juniper Networks Junos OS versions 19.2 versions prior to 19.2R2, 19.3R1 and above prior to 20.2R1. Juniper Networks Junos OS Evolved versions prior to 20.2R1-EVO.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- Denial of Service (DoS)
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://kb.juniper.net/JSA69875 |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | Junos OS |
Unaffected:
19.2 , < 19.2R2
(custom)
Unaffected: 19.3R1 , < 19.3* (custom) Unaffected: 19.4R1 , < 19.4* (custom) Unaffected: 20.1R1 , < 20.1* (custom) Affected: 20.2 , < 20.2R3-S4 (custom) Affected: 20.3 , < 20.3R3-S3 (custom) Affected: 20.4 , < 20.4R3-S4 (custom) Affected: 21.1 , < 21.1R3 (custom) Affected: 21.2 , < 21.2R2 (custom) Affected: 21.3 , < 21.3R2 (custom) |
|
| Juniper Networks | Junos OS Evolved |
Affected:
unspecified , < 20.4R3-S4-EVO
(custom)
Unaffected: unspecified , < 20.2R1-EVO (custom) Affected: 21.1R1-EVO , < 21.1-EVO* (custom) Affected: 21.2-EVO , < 21.2R2-EVO (custom) Affected: 21.3-EVO , < 21.3R2-EVO (custom) |
Date Public
2022-10-12 00:00
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CVE-2022-22220 (GCVE-0-2022-22220)
Vulnerability from cvelistv5 – Published: 2022-10-18 02:46 – Updated: 2025-05-12 14:43
VLAI
EPSS
VEX
Title
Junos OS and Junos OS Evolved: Due to a race condition the rpd process can crash upon receipt of a BGP update message containing flow spec route
Summary
A Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability in Routing Protocol Daemon (rpd) of Juniper Networks Junos OS, Junos OS Evolved allows a network-based unauthenticated attacker to cause a Denial of Service (DoS). When a BGP flow route with redirect IP extended community is received, and the reachability to the next-hop of the corresponding redirect IP is flapping, the rpd process might crash. Whether the crash occurs depends on the timing of the internally processing of these two events and is outside the attackers control. Please note that this issue also affects Route-Reflectors unless 'routing-options flow firewall-install-disable' is configured. This issue affects: Juniper Networks Junos OS: 18.4 versions prior to 18.4R2-S10, 18.4R3-S10; 19.1 versions prior to 19.1R3-S7; 19.2 versions prior to 19.2R1-S8, 19.2R3-S4; 19.4 versions prior to 19.4R3-S8; 20.2 versions prior to 20.2R3-S3; 20.3 versions prior to 20.3R3-S2; 20.4 versions prior to 20.4R3; 21.1 versions prior to 21.1R2. Juniper Networks Junos OS Evolved: All versions prior to 20.4R2-EVO; 21.1-EVO versions prior to 21.1R2-EVO. This issue does not affect Juniper Networks Junos OS versions prior to 18.4R1.
Severity
5.9 (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
- Denial of Service (DoS)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://kb.juniper.net/JSA69902 |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Juniper Networks | Junos OS |
Unaffected:
unspecified , < 18.4R1
(custom)
Affected: 18.4 , < 18.4R2-S10, 18.4R3-S10 (custom) Affected: 19.1 , < 19.1R3-S7 (custom) Affected: 19.2 , < 19.2R1-S8, 19.2R3-S4 (custom) Affected: 19.4 , < 19.4R3-S8 (custom) Affected: 20.2 , < 20.2R3-S3 (custom) Affected: 20.3 , < 20.3R3-S2 (custom) Affected: 20.4 , < 20.4R3 (custom) Affected: 21.1 , < 21.1R2 (custom) |
|
| Juniper Networks | Junos OS Evolved |
Affected:
unspecified , < 20.4R2-EVO
(custom)
Affected: 21.1-EVO , < 21.1R2-EVO (custom) |
Date Public
2022-10-12 00:00
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CVE-2022-21658 (GCVE-0-2022-21658)
Vulnerability from cvelistv5 – Published: 2022-01-20 00:00 – Updated: 2025-04-22 18:32
VLAI
EPSS
VEX
Title
Race condition in std::fs::remove_dir_all in rustlang
Summary
Rust is a multi-paradigm, general-purpose programming language designed for performance and safety, especially safe concurrency. The Rust Security Response WG was notified that the `std::fs::remove_dir_all` standard library function is vulnerable a race condition enabling symlink following (CWE-363). An attacker could use this security issue to trick a privileged program into deleting files and directories the attacker couldn't otherwise access or delete. Rust 1.0.0 through Rust 1.58.0 is affected by this vulnerability with 1.58.1 containing a patch. Note that the following build targets don't have usable APIs to properly mitigate the attack, and are thus still vulnerable even with a patched toolchain: macOS before version 10.10 (Yosemite) and REDOX. We recommend everyone to update to Rust 1.58.1 as soon as possible, especially people developing programs expected to run in privileged contexts (including system daemons and setuid binaries), as those have the highest risk of being affected by this. Note that adding checks in your codebase before calling remove_dir_all will not mitigate the vulnerability, as they would also be vulnerable to race conditions like remove_dir_all itself. The existing mitigation is working as intended outside of race conditions.
Severity
7.3 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
15 references
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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.