Thunderbird's update mechanism allowed a medium-integrity user process to interfere with the SYSTEM-level updater by manipulating the file-locking behavior. By injecting code into the user-privileged process, an attacker could bypass intended access controls, allowing SYSTEM-level file operations on paths controlled by a non-privileged user and enabling privilege escalation. This vulnerability affects Firefox < 138, Firefox ESR < 128.10, Firefox ESR < 115.23, Thunderbird < 138, and Thunderbird < 128.10.
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-2817.json"
[
{
"events": [
{
"introduced": "0"
},
{
"fixed": "115.23.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"fixed": "138.0"
}
]
},
{
"events": [
{
"introduced": "116.0"
},
{
"fixed": "128.10.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"fixed": "128.10.0"
}
]
},
{
"events": [
{
"introduced": "129.0"
},
{
"fixed": "138.0"
}
]
}
]