Use of Uninitialized Resource Affecting Firefox-ESR package, versions [,140.9.0)
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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- published24 Mar 2026
- disclosed24 Mar 2026
- creditJun Yang
Introduced: 24 Mar 2026
CVE-2026-4715 (opens in a new tab)How to fix?
Upgrade Firefox-ESR to version 140.9.0 or higher.
Overview
Affected versions of this package are vulnerable to Use of Uninitialized Resource due to the improper initialization of memory in the Canvas2D process. An attacker can potentially access sensitive information or cause unexpected behavior by rendering crafted content that triggers the use of uninitialized memory.