Common Weakness Enumeration
CWE-176
AllowedImproper Handling of Unicode Encoding
Abstraction: Variant · Status: Draft
The product does not properly handle when an input contains Unicode encoding.
63 vulnerabilities reference this CWE, most recent first.
CVE-2025-71316 (GCVE-0-2025-71316)
Vulnerability from cvelistv5 – Published: 2026-06-04 17:39 – Updated: 2026-06-10 10:34
VLAI
EPSS
VEX
Title
SQLite sqldiff remote code execution via argument injection
Summary
SQLite 'sqldiff.exe' does not securely handle the way the Microsoft Windows C runtime converts Unicode characters to ANSI codepages. An attacker could use the '-L' option to load an arbitrary DLL with a crafted command line argument string that results in command line file arguments being misinterpreted as command line options. Fixed on or around 2025-12-26.
Severity
9.8 (Critical)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator · cisa-cg (v2.0.3)
Decision recorded 2026-06-04 19:14 UTC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-05 03:55 UTC
CWE
- CWE-176 - Improper Handling of Unicode Encoding
References
5 references
| URL | Tags |
|---|---|
| https://sqlite.org/src/file/tool/winmain.c | patch |
| https://learn.microsoft.com/en-us/windows/win32/a… | mitigation |
| https://i.blackhat.com/EU-24/Presentations/EU-24-… | exploit |
| https://raw.githubusercontent.com/cisagov/CSAF/de… | third-party-advisory |
| https://www.cve.org/CVERecord?id=CVE-2025-71316 | vdb-entry |
Impacted products
Date Public
2025-12-26 00:00
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CVE-2025-59547 (GCVE-0-2025-59547)
Vulnerability from cvelistv5 – Published: 2025-09-23 17:56 – Updated: 2025-09-23 18:36
VLAI
EPSS
VEX
Title
DNN's CKEditor File Uploader functionality vulnerable through Unicode obfuscation
Summary
DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. Prior to version 10.1.0, the CKEditor file upload endpoint has insufficient sanitization for filenames allowing probing network endpoints. A specially crafted request can be made to upload a file with Unicode characters, which would be translated into a path that could expose resources in the internal network of the hosted site. This issue has been patched in version 10.1.0.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-09-23 18:28 UTC
CWE
- CWE-176 - Improper Handling of Unicode Encoding
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/dnnsoftware/Dnn.Platform/secur… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| dnnsoftware | Dnn.Platform |
Affected:
< 10.1.0
|
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CVE-2024-47611 (GCVE-0-2024-47611)
Vulnerability from cvelistv5 – Published: 2024-10-02 14:16 – Updated: 2024-11-21 16:55
VLAI
EPSS
VEX
Title
XZ Utils on Microsoft Windows platform are vulnerable to argument injection
Summary
XZ Utils provide a general-purpose data-compression library plus command-line tools. When built for native Windows (MinGW-w64 or MSVC), the command line tools from XZ Utils 5.6.2 and older have a command line argument injection vulnerability. If a command line contains Unicode characters (for example, filenames) that don't exist in the current legacy code page, the characters are converted to similar-looking characters with best-fit mapping. Some best-fit mappings result in ASCII characters that change the meaning of the command line, which can be exploited with malicious filenames to do argument injection or directory traversal attacks. This vulnerability is fixed in 5.6.3. Command line tools built for Cygwin or MSYS2 are unaffected. liblzma is unaffected.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-02 15:28 UTC
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/tukaani-project/xz/security/ad… | x_refsource_CONFIRM |
| https://github.com/tukaani-project/xz/commit/bf51… | x_refsource_MISC |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| tukaani-project | xz |
Affected:
< 5.6.3
|
|
| tukaani | xz |
Affected:
0 , < 5.6.3
(custom)
cpe:2.3:a:tukaani:xz:*:*:*:*:*:*:*:* |
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CVE-2024-24691 (GCVE-0-2024-24691)
Vulnerability from cvelistv5 – Published: 2024-02-14 00:01 – Updated: 2025-05-12 15:07
VLAI
EPSS
VEX
Title
Zoom Desktop Client for Windows, Zoom VDI Client for Windows, and Zoom Meeting SDK for Windows - Improper Input Validation
Summary
Improper input validation in Zoom Desktop Client for Windows, Zoom VDI Client for Windows, and Zoom Meeting SDK for Windows may allow an unauthenticated user to conduct an escalation of privilege via network access.
Severity
9.6 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-05-08 15:45 UTC
CWE
- CWE-176 - Improper Handling of Unicode Encoding
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zoom Video Communications, Inc. | Zoom Desktop Client for Windows, Zoom VDI Client for Windows, and Zoom Meeting SDK for Windows |
Affected:
see references
|
Date Public
2024-02-13 13:00
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CVE-2024-8067 (GCVE-0-2024-8067)
Vulnerability from cvelistv5 – Published: 2024-09-24 15:53 – Updated: 2024-11-21 16:57
VLAI
EPSS
VEX
Title
Unicode "best fit" argument injection
Summary
In versions of Helix Core prior to 2024.1 Patch 2 (2024.1/2655224) a Windows ANSI API Unicode "best fit" argument injection was identified.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-24 18:37 UTC
CWE
- CWE-176 - Improper Handling of Unicode Encoding
Assigner
References
1 reference
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Helix | Helix Core |
Affected:
2024.1 , ≤ 2024.1 Patch 2 (2024.1/2655224)
(semver)
|
|
| perforce | helix_core |
Affected:
0 , ≤ 2024.1patch2-2021.1/2655224
(semver)
cpe:2.3:a:perforce:helix_core:-:*:*:*:*:*:*:* |
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CVE-2023-52081 (GCVE-0-2023-52081)
Vulnerability from cvelistv5 – Published: 2023-12-28 15:34 – Updated: 2024-08-02 22:48
VLAI
EPSS
VEX
Title
ewen-lbh/ffcss late-Unicode normalization vulnerability
Summary
ffcss is a CLI interface to apply and configure Firefox CSS themes. Prior to 0.2.0, the function `lookupPreprocess()` is meant to apply some transformations to a string by disabling characters in the regex `[-_ .]`. However, due to the use of late Unicode normalization of type NFKD, it is possible to bypass that validation and re-introduce all the characters in the regex `[-_ .]`. The `lookupPreprocess()` can be easily bypassed with equivalent Unicode characters like U+FE4D (﹍), which would result in the omitted U+005F (_), for instance. The `lookupPreprocess()` function is only ever used to search for themes loosely (case insensitively, while ignoring dashes, underscores and dots), so the actual security impact is classified as low. This vulnerability is fixed in 0.2.0. There are no known workarounds.
Severity
5.3 (Medium)
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/ewen-lbh/ffcss/security/adviso… | x_refsource_CONFIRM |
| https://github.com/ewen-lbh/ffcss/commit/f9c49187… | x_refsource_MISC |
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CVE-2023-41889 (GCVE-0-2023-41889)
Vulnerability from cvelistv5 – Published: 2023-09-15 20:09 – Updated: 2024-09-25 18:54
VLAI
EPSS
VEX
Title
Late-Unicode normalization vulnerability in SHIRASAGI
Summary
SHIRASAGI is a Content Management System. Prior to version 1.18.0, SHIRASAGI is vulnerable to a Post-Unicode normalization issue. This happens when a logical validation or a security check is performed before a Unicode normalization. The Unicode character equivalent of a character would resurface after the normalization. The fix is initially performing the Unicode normalization and then strip for all whitespaces and then checking for a blank string. This issue has been fixed in version 1.18.0.
Severity
5.3 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-25 18:54 UTC
CWE
- CWE-176 - Improper Handling of Unicode Encoding
Assigner
References
3 references
| URL | Tags |
|---|---|
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| https://github.com/shirasagi/shirasagi/blob/f249c… | x_refsource_MISC |
| https://sim4n6.beehiiv.com/p/unicode-characters-b… | x_refsource_MISC |
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CVE-2023-39213 (GCVE-0-2023-39213)
Vulnerability from cvelistv5 – Published: 2023-08-08 21:36 – Updated: 2024-10-10 16:19
VLAI
EPSS
VEX
Summary
Improper neutralization of special elements in Zoom Desktop Client for Windows and Zoom VDI Client before 5.15.2 may allow an unauthenticated user to enable an escalation of privilege via network access.
Severity
9.6 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-10-10 16:19 UTC
CWE
- CWE-176 - Improper Handling of Unicode Encoding
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Zoom Video Communications, Inc. | Zoom Desktop Client for Windows and Zoom VDI Client |
Affected:
before 5.15.2
|
Date Public
2023-08-08 15:00
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CVE-2023-31169 (GCVE-0-2023-31169)
Vulnerability from cvelistv5 – Published: 2023-08-31 15:30 – Updated: 2024-09-27 18:49
VLAI
EPSS
VEX
Title
Improper Handling of Unicode Encoding
Summary
An Improper Handling of Unicode Encoding vulnerability in the Schweitzer Engineering Laboratories SEL-5030 acSELerator QuickSet Software could allow an attacker to embed instructions that could be executed by an authorized device operator.
See Instruction Manual Appendix A and Appendix E dated 20230615 for more details.
This issue affects SEL-5030 acSELerator QuickSet Software: through 7.1.3.0.
Severity
4.8 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-27 18:07 UTC
CWE
- CWE-176 - Improper Handling of Unicode Encoding
Assigner
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Schweitzer Engineering Laboratories | SEL-5030 acSELerator QuickSet Software |
Affected:
0 , ≤ 7.1.3.0
(custom)
|
Date Public
2023-08-31 16:00
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CVE-2022-29812 (GCVE-0-2022-29812)
Vulnerability from cvelistv5 – Published: 2022-04-28 09:55 – Updated: 2024-08-03 06:33
VLAI
EPSS
VEX
Summary
In JetBrains IntelliJ IDEA before 2022.1 notification mechanisms about using Unicode directionality formatting characters were insufficient
Severity
CWE
- CWE-176 - Improper Handling of Unicode Encoding
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.jetbrains.com/privacy-security/issues… | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| JetBrains | IntelliJ IDEA |
Affected:
2022.1 , < 2022.1
(custom)
|
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Mitigation MIT-44
Architecture and Design
Strategy: Input Validation
Avoid making decisions based on names of resources (e.g. files) if those resources can have alternate names.
Mitigation MIT-5
Implementation
Strategy: Input Validation
- Assume all input is malicious. Use an "accept known good" input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
- When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, "boat" may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as "red" or "blue."
- Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code's environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
Mitigation MIT-20
Implementation
Strategy: Input Validation
Inputs should be decoded and canonicalized to the application's current internal representation before being validated (CWE-180). Make sure that the application does not decode the same input twice (CWE-174). Such errors could be used to bypass allowlist validation schemes by introducing dangerous inputs after they have been checked.
CAPEC-71: Using Unicode Encoding to Bypass Validation Logic
An attacker may provide a Unicode string to a system component that is not Unicode aware and use that to circumvent the filter or cause the classifying mechanism to fail to properly understanding the request. That may allow the attacker to slip malicious data past the content filter and/or possibly cause the application to route the request incorrectly.