Out-of-bounds Write Affecting firefox package, versions <135.0-r0


Severity

Recommended
0.0
critical
0
10

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Threat Intelligence

EPSS
0.53% (43rd percentile)

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  • Snyk IDSNYK-WOLFILATEST-FIREFOX-15384175
  • published4 Mar 2026
  • disclosed4 Feb 2025

Introduced: 4 Feb 2025

CVE-2025-1020  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Wolfi firefox to version 135.0-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox package and not the firefox package as distributed by Wolfi. See How to fix? for Wolfi relevant fixed versions and status.

Memory safety bugs present in Firefox 134 and Thunderbird 134. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 135 and Thunderbird 135.

CVSS Base Scores

version 3.1