CVE-2025-11716

Sandboxed iframes allowed links to open in external apps (Android only)

MEDIUM

6.5

CVSS Score

Published: October 14, 2025 at 12:27 PM UTC

Updated: October 18, 2026 at 09:10 PM UTC

2 products affected across 1 vendorFirefoxThunderbird· also runs on 1 platform

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Severity

MEDIUM6.5

Exploit prediction

EPSS 0.2%

SSVC

No known exploit

Description

Links in a sandboxed iframe could open an external app on Android without the required "allow-" permission. This vulnerability affects Firefox < 144 and Thunderbird < 144.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Firefox · Mozilla

95%

v < 144.0

Vendor states this is fixed in 144 (unaffected)

google-android (environment)

Thunderbird · Mozilla

95%

v < 144.0

Vendor states this is fixed in 144 (unaffected)

google-android (environment)

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

Android · Google

95%

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (3)

Issue TrackingPermissions Required

Source: cverecord

https://bugzilla.mozilla.org/show_bug.cgi?id=1818679

Vendor Advisory

Source: cverecord

https://www.mozilla.org/security/advisories/mfsa2025-81/

Vendor Advisory

Source: cverecord

https://www.mozilla.org/security/advisories/mfsa2025-84/

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMCISA-ADP

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: REQUIRED
Scope: UNCHANGED
Confidentiality: NONE
Integrity: HIGH
Availability: NONE

Vector?

Quick Info

StatusMODIFIED

CWE

CWE-284

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