CVE-2025-8044 — Improper Restriction of Operations within the Bounds of a Memory Buffer in Mozilla Firefox

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer8 documents7 sources
Severity
9.8CRITICALNVD
EPSS
0.1%
top 73.16%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Mozilla FirefoxMozilla Thunderbird
Timeline
PublishedJul 22

Description

Memory safety bugs present in Firefox 140 and Thunderbird 140. 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 141 and Thunderbird 141.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9

Affected Packages2 packages

▶NVDmozilla/firefox< 141.0
▶NVDmozilla/thunderbird< 141.0

🔴Vulnerability Details

3
OSV
CVE-2025-8044: Memory safety bugs present in Firefox 140 and Thunderbird 140↗2025-07-22
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GHSA
GHSA-mm3g-858w-g8p8: Memory safety bugs present in Firefox 140 and Thunderbird 140↗2025-07-22
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CVEList
Memory safety bugs fixed in Firefox 141 and Thunderbird 141↗2025-07-22
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📋Vendor Advisories

4
Red Hat
firefox: thunderbird: Memory safety bugs fixed in Firefox 141 and Thunderbird 141↗2025-07-22
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Debian
CVE-2025-8044: firefox - Memory safety bugs present in Firefox 140 and Thunderbird 140. Some of these bug...↗2025
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Mozilla
Mozilla Foundation Security Advisory 2025-56: CVE-2025-8044↗
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Mozilla
Mozilla Foundation Security Advisory 2025-61: CVE-2025-8044↗
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CVE-2025-8044 — Mozilla Firefox vulnerability | cvebase