Integer Overflow or Wraparound Affecting open62541 package, versions [1.3.1,]
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applicationsSnyk Learn
Learn about Integer Overflow or Wraparound vulnerabilities in an interactive lesson.
Start learning- Snyk IDSNYK-CONAN-OPEN62541-18507967
- published2 Aug 2026
- disclosed30 Jul 2026
- creditUnknown
Introduced: 30 Jul 2026
NewCVE-2026-65423 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
Overview
Affected versions of this package are vulnerable to Integer Overflow or Wraparound via the UA_Variant arrayDimensions product computation process. An attacker can cause an out-of-bounds write by sending specially crafted input that triggers an integer overflow.