CWE-196 (Unsigned to Signed Conversion Error) documents a weakness type used across vulnerability databases and security assessments. Use the sections below for definition, context, and mapped CVEs.
The product uses an unsigned primitive and performs a cast to a signed primitive, which can produce an unexpected value if the value of the unsigned primitive can not be represented using a signed primitive.
| Kind | Name | Class | Prevalence | OS / CPE |
|---|---|---|---|---|
| language | C | — | Undetermined | — |
| language | C++ | — | Undetermined | — |
These CVEs are mapped to this weakness in this database and kept for traceability and search.
| CVE | Published | Summary |
|---|---|---|
| CVE-2026-34155 | 2026-03-31 | RAUC controls the update process on embedded Linux systems. Prior to version 1.15.2, RAUC bundles using the 'plain' format exceeding a payload size of 2 GiB cause an integer overflow which results in … |
| CVE-2023-0185 | 2023-04-01 | NVIDIA GPU Display Driver for Linux contains a vulnerability in the kernel mode layer, where sign conversion issuescasting an unsigned primitive to signed may lead to denial of service or information … |
| CVE-2022-36025 | 2022-09-24 | Besu is a Java-based Ethereum client. In versions newer than 22.1.3 and prior to 22.7.1, Besu is subject to an Incorrect Conversion between Numeric Types. An error in 32 bit signed and unsigned types … |
| CVE-2020-13545 | 2021-01-06 | An exploitable signed conversion vulnerability exists in the TextMaker document parsing functionality of SoftMaker Office 2021’s TextMaker application. A specially crafted document can cause the docum… |
| CVE-2020-7067 | 2020-04-27 | In PHP versions 7.2.x below 7.2.30, 7.3.x below 7.3.17 and 7.4.x below 7.4.5, if PHP is compiled with EBCDIC support (uncommon), urldecode() function can be made to access locations past the allocated… |
| Date | Name | Version | Importance | Comment |
|---|---|---|---|---|
| 2008-09-08 | CWE Content Team | 1.0 | — | updated Applicable_Platforms, Common_Consequences, Relationships, Other_Notes, Taxonomy_Mappings |
| 2009-05-27 | CWE Content Team | 1.4 | — | updated Demonstrative_Examples |
| 2009-10-29 | CWE Content Team | 1.6 | — | updated Common_Consequences |
| 2010-12-13 | CWE Content Team | 1.11 | — | updated Other_Notes |
| 2011-06-01 | CWE Content Team | 1.13 | — | updated Common_Consequences |
| 2012-05-11 | CWE Content Team | 2.2 | — | updated References, Relationships |
| 2012-10-30 | CWE Content Team | 2.3 | — | updated Potential_Mitigations |
| 2014-06-23 | CWE Content Team | 2.7 | — | updated Demonstrative_Examples, Description, Other_Notes |
| 2014-07-30 | CWE Content Team | 2.8 | — | updated Relationships, Taxonomy_Mappings |
| 2020-02-24 | CWE Content Team | 4.0 | — | updated Relationships |
| 2020-08-20 | CWE Content Team | 4.2 | — | updated Relationships |
| 2020-12-10 | CWE Content Team | 4.3 | — | updated Relationships |
| 2021-03-15 | CWE Content Team | 4.4 | — | updated References |
| 2023-01-31 | CWE Content Team | 4.10 | — | updated Description |
| 2023-04-27 | CWE Content Team | 4.11 | — | updated Relationships |
| 2023-06-29 | CWE Content Team | 4.12 | — | updated Mapping_Notes |
| 2025-12-11 | CWE Content Team | 4.19 | — | updated Detection_Factors, Weakness_Ordinalities |