Medium severity6.5NVD Advisory· Published Apr 29, 2025· Updated Jun 17, 2026
CVE-2025-4086
CVE-2025-4086
Description
A specially crafted filename containing a large number of encoded newline characters could obscure the file's extension when displayed in the download dialog. *This bug only affects Thunderbird for Android. Other versions of Thunderbird are unaffected.*. This vulnerability was fixed in Firefox 138 and Thunderbird 138.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
21- Range: <138
- osv-coords18 versionspkg:apk/chainguard/firefoxpkg:apk/wolfi/firefoxpkg:deb/ubuntu/[email protected]+build3-0ubuntu0.20.04.1?arch=source&distro=focalpkg:deb/ubuntu/[email protected]?arch=source&distro=jammypkg:deb/ubuntu/[email protected]?arch=source&distro=noblepkg:deb/ubuntu/[email protected]?arch=source&distro=noblepkg:deb/ubuntu/[email protected]?arch=source&distro=oracularpkg:deb/ubuntu/[email protected]?arch=source&distro=pluckypkg:deb/ubuntu/[email protected]~repack1-0ubuntu4?arch=source&distro=esm-apps/bionicpkg:deb/ubuntu/[email protected]?arch=source&distro=esm-infra/bionicpkg:deb/ubuntu/[email protected]?arch=source&distro=focalpkg:deb/ubuntu/[email protected]?arch=source&distro=focalpkg:deb/ubuntu/[email protected]?arch=source&distro=jammypkg:deb/ubuntu/[email protected]?arch=source&distro=jammypkg:deb/ubuntu/thunderbird@1:115.18.0+build1-0ubuntu0.20.04.1?arch=source&distro=focalpkg:deb/ubuntu/thunderbird@1:115.18.0+build1-0ubuntu0.22.04.1?arch=source&distro=jammypkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/firefox-esr&distro=openSUSE%20Tumbleweed
< 138-r0+ 17 more
- (no CPE)range: < 138-r0
- (no CPE)range: < 138-r0
- (no CPE)range: >= 0
- (no CPE)range: >= 0
- (no CPE)range: >= 0
- (no CPE)range: >= 0
- (no CPE)range: >= 0
- (no CPE)range: >= 0
- (no CPE)range: >= 0
- (no CPE)range: >= 0
- (no CPE)range: >= 0
- (no CPE)range: >= 0
- (no CPE)range: >= 0
- (no CPE)range: >= 0
- (no CPE)range: >= 0
- (no CPE)range: >= 0
- (no CPE)range: < 138.0-1.1
- (no CPE)range: < 153.0-1.1
Patches
Vulnerability mechanics
References
3- www.mozilla.org/security/advisories/mfsa2025-28/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2025-31/nvdVendor Advisory
- bugzilla.mozilla.org/show_bug.cginvdPermissions Required
News mentions
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