Common Weakness Enumeration
CWE-457
AllowedUse of Uninitialized Variable
Abstraction: Variant · Status: Draft
The code uses a variable that has not been initialized, leading to unpredictable or unintended results.
332 vulnerabilities reference this CWE, most recent first.
CVE-2026-17077 (GCVE-0-2026-17077)
Vulnerability from cvelistv5 – Published: 2026-08-13 20:25 – Updated: 2026-08-17 18:18
VLAI
EPSS
VEX
Title
IBM i is Affected By Multiple Vulnerabilities in DRDA / DDM
Summary
IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to cause a denial of service due to the use of an uninitialized variable.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-17 17:10 UTC
CWE
- CWE-457 - Use of Uninitialized Variable
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.ibm.com/support/pages/node/7283572 | vendor-advisorypatch |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| IBM | i |
Affected:
7.6
Affected: 7.5 Affected: 7.4 Affected: 7.3 cpe:2.3:a:ibm:i:7.6:*:*:*:*:*:*:* cpe:2.3:a:ibm:i:7.6.0:*:*:*:*:*:*:* cpe:2.3:a:ibm:i:7.5:*:*:*:*:*:*:* cpe:2.3:a:ibm:i:7.5.0:*:*:*:*:*:*:* cpe:2.3:a:ibm:i:7.4:*:*:*:*:*:*:* cpe:2.3:a:ibm:i:7.4.0:*:*:*:*:*:*:* cpe:2.3:a:ibm:i:7.3:*:*:*:*:*:*:* cpe:2.3:a:ibm:i:7.3.0:*:*:*:*:*:*:* |
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CVE-2026-15168 (GCVE-0-2026-15168)
Vulnerability from cvelistv5 – Published: 2026-07-08 21:47 – Updated: 2026-07-09 13:54
VLAI
EPSS
VEX
Title
Use of Uninitialized Variable in Wireshark
Summary
BLF file parser in Wireshark 4.6.0 to 4.6.6 and 4.4.0 to 4.4.16 allows possible information disclosure
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-09 13:53 UTC
CWE
- CWE-457 - Use of Uninitialized Variable
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Wireshark Foundation | Wireshark |
Affected:
4.6.0 , < 4.6.7
(semver)
Affected: 4.4.0 , < 4.4.17 (semver) |
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CVE-2026-9754 (GCVE-0-2026-9754)
Vulnerability from cvelistv5 – Published: 2026-06-09 22:33 – Updated: 2026-06-10 18:29
VLAI
EPSS
VEX
Title
Stack memory disclosure in filemd5 command
Summary
An authenticated user with the read role may read limited amounts of uninitialized stack memory via specially-crafted issuances of the filemd5 command
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-10 18:29 UTC
CWE
- CWE-457 - Use of uninitialized variable
Assigner
References
1 reference
Impacted products
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CVE-2026-4147 (GCVE-0-2026-4147)
Vulnerability from cvelistv5 – Published: 2026-03-17 15:50 – Updated: 2026-03-17 16:09
VLAI
EPSS
VEX
Title
Stack memory disclosure in filemd5 command
Summary
An authenticated user with the read role may read limited amounts of uninitialized stack memory via specially-crafted issuances of the filemd5 command.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-17 16:09 UTC
CWE
- CWE-457 - Use of uninitialized variable
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| MongoDB Inc | MongoDB Server |
Affected:
8.2 , < 8.2.6
(custom)
Affected: 8.0 , < 8.0.20 (custom) Affected: 7.0 , < 7.0.31 (custom) |
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CVE-2026-1333 (GCVE-0-2026-1333)
Vulnerability from cvelistv5 – Published: 2026-02-16 13:35 – Updated: 2026-02-26 14:44
VLAI
EPSS
VEX
Title
Use of Uninitialized Variable vulnerability affecting the EPRT file reading procedure in SOLIDWORKS eDrawings from Release SOLIDWORKS Desktop 2025 through Release SOLIDWORKS Desktop 2026
Summary
A Use of Uninitialized Variable vulnerability affecting the EPRT file reading procedure in SOLIDWORKS eDrawings from Release SOLIDWORKS Desktop 2025 through Release SOLIDWORKS Desktop 2026 could allow an attacker to execute arbitrary code while opening a specially crafted EPRT file.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-18 04:56 UTC
CWE
- CWE-457 - Use of Uninitialized Variable
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Dassault Systèmes | SOLIDWORKS eDrawings |
Affected:
Release SOLIDWORKS Desktop 2025 SP0 , ≤ Release SOLIDWORKS Desktop 2025 SP5
(custom)
Affected: Release SOLIDWORKS Desktop 2026 SP0 |
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CVE-2025-64181 (GCVE-0-2025-64181)
Vulnerability from cvelistv5 – Published: 2025-11-10 21:23 – Updated: 2025-11-12 21:05
VLAI
EPSS
VEX
Title
OpenEXR Makes Use of Uninitialized Memory
Summary
OpenEXR provides the specification and reference implementation of the EXR file format, an image storage format for the motion picture industry. In versions 3.3.0 through 3.3.5 and 3.4.0 through 3.4.2, while fuzzing `openexr_exrcheck_fuzzer`, Valgrind reports a conditional branch depending on uninitialized data inside `generic_unpack`. This indicates a use of uninitialized memory. The issue can result in undefined behavior and/or a potential crash/denial of service. Versions 3.3.6 and 3.4.3 fix the issue.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-11-12 17:36 UTC
CWE
- CWE-457 - Use of Uninitialized Variable
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://github.com/AcademySoftwareFoundation/open… | x_refsource_CONFIRM |
| https://github.com/user-attachments/files/2302472… | x_refsource_MISC |
| https://github.com/user-attachments/files/2302473… | x_refsource_MISC |
| https://github.com/user-attachments/files/2302474… | x_refsource_MISC |
| https://github.com/user-attachments/files/2302474… | x_refsource_MISC |
| https://github.com/user-attachments/files/2302474… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| AcademySoftwareFoundation | openexr |
Affected:
>= 3.3.0, < 3.3.6
Affected: >= 3.4.0, < 3.4.3 |
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CVE-2025-59348 (GCVE-0-2025-59348)
Vulnerability from cvelistv5 – Published: 2025-09-17 19:30 – Updated: 2025-09-17 19:45
VLAI
EPSS
VEX
Title
Dragonfly incorrectly handles a task structure’s usedTraffic field
Summary
Dragonfly is an open source P2P-based file distribution and image acceleration system. Prior to 2.1.0, the processPieceFromSource method does not update the structure’s usedTraffic field, because an uninitialized variable n is used as a guard to the AddTraffic method call, instead of the result.Size variable. A task is processed by a peer. The usedTraffic metadata is not updated during the processing. Rate limiting is incorrectly applied, leading to a denial-of-service condition for the peer. This vulnerability is fixed in 2.1.0.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-09-17 19:44 UTC
CWE
- CWE-457 - Use of Uninitialized Variable
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/dragonflyoss/dragonfly/securit… | x_refsource_CONFIRM |
| https://github.com/dragonflyoss/dragonfly/blob/ma… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| dragonflyoss | dragonfly |
Affected:
< 2.1.0
|
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CVE-2025-58466 (GCVE-0-2025-58466)
Vulnerability from cvelistv5 – Published: 2026-02-11 12:16 – Updated: 2026-02-11 16:54
VLAI
EPSS
VEX
Title
QTS, QuTS hero
Summary
A use of uninitialized variable vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains an administrator account, they can then exploit the vulnerability to denial of service conditions, or modify control flow in unexpected ways.
We have already fixed the vulnerability in the following versions:
QTS 5.2.8.3332 build 20251128 and later
QuTS hero h5.2.8.3321 build 20251117 and later
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-11 16:54 UTC
CWE
Assigner
References
1 reference
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| QNAP Systems Inc. | QTS |
Affected:
5.2.x , < 5.2.8.3332 build 20251128
(custom)
|
|
| QNAP Systems Inc. | QuTS hero |
Affected:
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CVE-2025-58071 (GCVE-0-2025-58071)
Vulnerability from cvelistv5 – Published: 2025-10-15 15:19 – Updated: 2026-02-26 16:57
VLAI
EPSS
VEX
Title
BIG-IP IPSec vulnerability
Summary
When IPsec is configured on the BIG-IP system, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-16 03:57 UTC
CWE
- CWE-457 - Use of Uninitialized Variable
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://my.f5.com/manage/s/article/K000156746 | vendor-advisory |
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| F5 | BIG-IP |
Affected:
17.5.0 , < 17.5.1
(custom)
Affected: 17.1.0 , < 17.1.3 (custom) Affected: 16.1.0 , < 16.1.6.1 (custom) Affected: 15.1.0 , < 15.1.10.8 (custom) |
|
| F5 | BIG-IP Next CNF |
Affected:
2.0.0 , < *
(custom)
Affected: 1.1.0 , < * (custom) |
|
| F5 | BIG-IP Next for Kubernetes |
Affected:
2.0.0 , < *
(custom)
|
Date Public
2025-10-15 14:00
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CVE-2025-54874 (GCVE-0-2025-54874)
Vulnerability from cvelistv5 – Published: 2025-08-05 14:33 – Updated: 2026-02-26 17:49
VLAI
EPSS
VEX
Title
OpenJPEG allows OOB heap memory write in opj_jp2_read_header
Summary
OpenJPEG is an open-source JPEG 2000 codec. In OpenJPEG from 2.5.1 through 2.5.3, a call to opj_jp2_read_header may lead to OOB heap memory write when the data stream p_stream is too short and p_image is not initialized.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-01-22 04:55 UTC
CWE
- CWE-457 - Use of Uninitialized Variable
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/uclouvain/openjpeg/commit/f809… | x_refsource_CONFIRM |
| https://github.com/uclouvain/openjpeg/pull/1573 | x_refsource_MISC |
| https://securitylab.github.com/advisories/GHSL-20… | x_refsource_MISC |
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Mitigation MIT-57
Implementation
Strategy: Attack Surface Reduction
Ensure that critical variables are initialized before first use [REF-1485].
Mitigation
Build and Compilation
Strategy: Compilation or Build Hardening
Most compilers will complain about the use of uninitialized variables if warnings are turned on.
Mitigation
Implementation
Operation
When using a language that does not require explicit declaration of variables, run or compile the software in a mode that reports undeclared or unknown variables. This may indicate the presence of a typographic error in the variable's name.
Mitigation
Requirements
Strategy: Language Selection
Choose a language that is not susceptible to these issues.
Mitigation
Architecture and Design
Mitigating technologies such as safe string libraries and container abstractions could be introduced.
No CAPEC attack patterns related to this CWE.