Not rated
CVE-2017-7761 The Mozilla Maintenance Service "helper.exe" application creates a temporary directory writable by non-privileged users
Description
The Mozilla Maintenance Service "helper.exe" application creates a temporary directory writable by non-privileged users. When this is combined with creation of a junction (a form of symbolic link), protected files in the target directory of the junction can be deleted by the Mozilla Maintenance Service, which has privileged access. Note: This attack requires local system access and only affects Windows. Other operating systems are not affected. This vulnerability affects Firefox ESR < 52.2 and Firefox < 54.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Firefox ESR 52.2 | earliest → < 52.2 | 52.2 |
| Firefox 54 | earliest → < 54 | 54 |
References
- 99057 www.securityfocus.com
- bugzilla.mozilla.org bugzilla.mozilla.org
- www.mozilla.org www.mozilla.org
- 1038689 www.securitytracker.com
- sourceforge.net sourceforge.net
- www.mozilla.org www.mozilla.org
Timeline
- Published
- Last modified
Other CVEs of Firefox ESR
The 833 CVEs of Firefox ESR →
CVE-2026-5734
Memory safety bugs present in Firefox ESR 140.9.0, Thunderbird ESR 140.9.0, Firefox 149.0.1 and Thunderbird 149.0.1
8.1
High
CVE-2026-5732
Incorrect boundary conditions, integer overflow in the Graphics: Text component
8.8
High
CVE-2026-5731
Memory safety bugs present in Firefox ESR 115.34.0, Firefox ESR 140.9.0, Thunderbird ESR 140.9.0, Firefox 149.0.1 and…
9.8
Critical
CVE-2026-2447
Heap buffer overflow in libvpx
8.8
High