PT-2025-18156 · Mozilla+11 · Thunderbird+14
Ivan Fratric
·
Published
2025-04-29
·
Updated
2025-09-22
·
CVE-2025-4087
CVSS v2.0
6.4
Medium
| Vector | AV:N/AC:L/Au:N/C:P/I:P/A:N |
Name of the Vulnerable Software and Affected Versions
Firefox versions prior to 138
Firefox ESR versions prior to 128.10
Thunderbird versions prior to 138
Thunderbird ESR versions prior to 128.10
Description
A vulnerability was identified where XPath parsing could trigger undefined behavior due to missing null checks during attribute access. This could lead to out-of-bounds read access and potentially, memory corruption.
Recommendations
For Firefox versions prior to 138, update to version 138 or later.
For Firefox ESR versions prior to 128.10, update to version 128.10 or later.
For Thunderbird versions prior to 138, update to version 138 or later.
For Thunderbird ESR versions prior to 128.10, update to version 128.10 or later.
Fix
Out of bounds Read
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Weakness Enumeration
Related Identifiers
Affected Products
Alt Linux
Almalinux
Astra Linux
Centos
Debian
Firefox
Firefox Esr
Linuxmint
Red Hat
Red Os
Rocky Linux
Suse
Thunderbird
Thunderbird Esr
Ubuntu