CVE-2025-9185 — 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 Buffer15 documents9 sources
Severity
8.1HIGHNVD
EPSS
0.1%
top 75.02%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedAug 19
Latest updateFeb 2
Description
Memory safety bugs present in Firefox ESR 115.26, Firefox ESR 128.13, Thunderbird ESR 128.13, Firefox ESR 140.1, Thunderbird ESR 140.1, Firefox 141 and Thunderbird 141. 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 142, Firefox ESR 115.27, Firefox ESR 128.14, Firefox ESR 140.2, Thunderbird 142, Thunderbird 128.14, and Thunderbird 140.2.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 2.2 | Impact: 5.9
Affected Packages3 packages
🔴Vulnerability Details
3CVEList▶
Memory safety bugs fixed in Firefox ESR 115.27, Firefox ESR 128.14, Thunderbird ESR 128.14, Firefox ESR 140.2, Thunderbird ESR 140.2, Firefox 142 and Thunderbird 142↗2025-08-19
📋Vendor Advisories
11Red Hat▶
thunderbird: firefox: Memory safety bugs fixed in Firefox ESR 115.27, Firefox ESR 128.14, Thunderbird ESR 128.14, Firefox ESR 140.2, Thunderbird ESR 140.2, Firefox 142 and Thunderbird 142↗2025-08-19
Debian▶
CVE-2025-9185: firefox - Memory safety bugs present in Firefox ESR 115.26, Firefox ESR 128.13, Thunderbir...↗2025
Microsoft
▶