CWE-194
Unexpected Sign Extension
Description
The product performs an operation on a number that causes it to be sign extended when it is transformed into a larger data type. When the original number is negative, this can produce unexpected values that lead to resultant weaknesses.
Hierarchy (View 1000)
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CVEs mapped to this weakness (5)
| CVE | Vendor / Product | Sev | Risk | CVSS | EPSS | KEV | Published | Description |
|---|---|---|---|---|---|---|---|---|
| CVE-2022-32138 | Hig | 0.57 | 8.8 | 0.01 | Jun 24, 2022 | In multiple CODESYS products, a remote attacker may craft a request which may cause an unexpected sign extension, resulting in a denial-of-service condition or memory overwrite. | ||
| CVE-2021-38434 | Hig | 0.51 | 7.8 | 0.01 | Oct 18, 2021 | FATEK Automation WinProladder versions 3.30 and prior lacks proper validation of user-supplied data when parsing project files, which could result in an unexpected sign extension. An attacker could leverage this vulnerability to execute arbitrary code. | ||
| CVE-2020-13544 | Hig | 0.51 | 7.8 | 0.02 | Jan 6, 2021 | An exploitable sign extension vulnerability exists in the TextMaker document parsing functionality of SoftMaker Office 2021’s TextMaker application. A specially crafted document can cause the document parser to sign-extend a length used to terminate a loop, which can later… | ||
| CVE-2025-13632 | Med | 0.35 | 5.4 | 0.00 | Dec 2, 2025 | Inappropriate implementation in DevTools in Google Chrome prior to 143.0.7499.41 allowed an attacker who convinced a user to install a malicious extension to potentially perform a sandbox escape via a crafted Chrome Extension. (Chromium security severity: High) | ||
| CVE-2018-10887 | Hig | 0.00 | 8.1 | 0.02 | Jul 10, 2018 | A flaw was found in libgit2 before version 0.27.3. It has been discovered that an unexpected sign extension in git_delta_apply function in delta.c file may lead to an integer overflow which in turn leads to an out of bound read, allowing to read before the base object. An… |
- risk 0.57cvss 8.8epss 0.01
In multiple CODESYS products, a remote attacker may craft a request which may cause an unexpected sign extension, resulting in a denial-of-service condition or memory overwrite.
- risk 0.51cvss 7.8epss 0.01
FATEK Automation WinProladder versions 3.30 and prior lacks proper validation of user-supplied data when parsing project files, which could result in an unexpected sign extension. An attacker could leverage this vulnerability to execute arbitrary code.
- risk 0.51cvss 7.8epss 0.02
An exploitable sign extension vulnerability exists in the TextMaker document parsing functionality of SoftMaker Office 2021’s TextMaker application. A specially crafted document can cause the document parser to sign-extend a length used to terminate a loop, which can later…
- risk 0.35cvss 5.4epss 0.00
Inappropriate implementation in DevTools in Google Chrome prior to 143.0.7499.41 allowed an attacker who convinced a user to install a malicious extension to potentially perform a sandbox escape via a crafted Chrome Extension. (Chromium security severity: High)
- risk 0.00cvss 8.1epss 0.02
A flaw was found in libgit2 before version 0.27.3. It has been discovered that an unexpected sign extension in git_delta_apply function in delta.c file may lead to an integer overflow which in turn leads to an out of bound read, allowing to read before the base object. An…