Use of Uninitialized Resource Affecting Firefox-ESR package, versions [,140.10)
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.
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Test your applications- Snyk IDSNYK-UNMANAGED-FIREFOXESR-16299482
- published26 Apr 2026
- disclosed21 Apr 2026
- creditUnknown
Introduced: 21 Apr 2026
CVE-2026-6748 (opens in a new tab)How to fix?
Upgrade Firefox-ESR to version 140.10 or higher.
Overview
Affected versions of this package are vulnerable to Use of Uninitialized Resource due to the improper initialization of memory in the Web Codecs component. An attacker can potentially access sensitive information or cause unexpected behavior by triggering the processing of uninitialized memory.