Common Weakness Enumeration

CWE-457

Use of Uninitialized Variable

The code uses a variable that has not been initialized, leading to unpredictable or unintended results.

CVE-2026-47330 (GCVE-0-2026-47330)

Vulnerability from cvelistv5 – Published: 2026-05-28 18:27 – Updated: 2026-05-28 19:24
VLAI
Title
Use of uninitialized value in Ubuntu Linux AppArmor notification handling
Summary
Ubuntu Linux 6.8, 7.17 and 7.0 contain AppArmor SAUCE patches which can, under certain circumstances, use an uninitialized variable in notification handling code. The bug can be triggered by an unprivileged local user and can result in the incorrect caching of AppArmor notification responses.
Severity
3.3 (Low)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-457 - Use of uninitialized variable
Assigner
References
Impacted products
Vendor Product Version
Canonical Ubuntu Linux Affected: 6.8.0 , < 6.8.0-124.124 (dpkg)
Affected: 6.17.0 , < 6.17.0-35.35 (dpkg)
Affected: 7.0.0 , < 7.0.0-22.22 (dpkg)
Create a notification for this product.
Credits
Tristan Madani (@TristanInSec), Talence Security
Show details on NVD website
To clipboard 

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CVE-2026-47336 (GCVE-0-2026-47336)

Vulnerability from cvelistv5 – Published: 2026-05-28 18:29 – Updated: 2026-05-28 19:23
VLAI
Title
Use of uninitialized value in Ubuntu Linux AppArmor IPv4/IPv6 socket mediation rules
Summary
Ubuntu Linux 6.8 contains SAUCE patches with a possible use of an uninitialized variable in AppArmor AF_INET/AF_INET6 socket mediation code. The bug can be triggered by an unprivileged local user and could result in incorrect fine-grained mediation of network sockets.
Severity
3.3 (Low)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-457 - Use of uninitialized variable
Assigner
References
Impacted products
Vendor Product Version
Canonical Ubuntu Linux Affected: 6.8.0 , < 6.8.0-124.124 (dpkg)
Create a notification for this product.
Credits
Tristan Madani (@TristanInSec), Talence Security
Show details on NVD website
To clipboard 

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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
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
7.1 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
6.5 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-457 - Use of uninitialized variable
Assigner
References
Impacted products
Vendor Product Version
MongoDB MongoDB Affected: 8.3.0 , < 8.3.3 (semver)
Affected: 8.2.0 , < 8.2.10 (semver)
Create a notification for this product.
Show details on NVD website
To clipboard 

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Mitigation ID: MIT-57

Phase: Implementation

Strategy: Attack Surface Reduction

Description:

  • Ensure that critical variables are initialized before first use [REF-1485].
Mitigation

Phase: Build and Compilation

Strategy: Compilation or Build Hardening

Description:

  • Most compilers will complain about the use of uninitialized variables if warnings are turned on.
Mitigation

Phases: Implementation, Operation

Description:

  • 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

Phase: Requirements

Strategy: Language Selection

Description:

  • Choose a language that is not susceptible to these issues.
Mitigation

Phase: Architecture and Design

Description:

  • Mitigating technologies such as safe string libraries and container abstractions could be introduced.

No CAPEC attack patterns related to this CWE.

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