CVE-2025-5272CWE-787

CVE-2025-5272

High · published May 27, 2025

CVSS v3.1
7.3
EPSS
0%
Percentile
24.4
In the wild
Unconfirmed
What it is

Memory safety bugs present in Firefox 138 and Thunderbird 138. 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 139 and Thunderbird 139.

The record
Technical detail
CVSS v3.1
7.3 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CVSS v4.0
Not supplied
EPSS
0.00326 · 24.4th percentile
Weakness
CWE-787 · Out-of-bounds Write
Published
2025-05-27T17:15Z
Affected products (2)
ProductVersionsFixed in
mozilla/firefox< 139.0139.0
mozilla/thunderbird< 139.0139.0
References (3)
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1726254%2C1742738%2C1960121 · [email protected]https://www.mozilla.org/security/advisories/mfsa2025-42/ · [email protected]https://www.mozilla.org/security/advisories/mfsa2025-45/ · [email protected]
EPSS history
Timeline
  • 27 MAY 12:29Z
    Memory safety bugs fixed in Firefox 139 and Thunderbird 139
    cvelistv5