CVE DATABASE / CVE-2015-4495
CVE-2015-4495
Mozilla Firefox Security Feature Bypass Vulnerability
Confirmed exploited in the wild. Added 2022-05-25.
Federal remediation due 2022-06-15.
Required action: Apply updates per vendor instructions.
Summary
The PDF reader in Mozilla Firefox before 39.0.3, Firefox ESR 38.x before 38.1.1, and Firefox OS before 2.2 allows remote attackers to bypass the Same Origin Policy, and read arbitrary files or gain privileges, via vectors involving crafted JavaScript code and a native setter, as exploited in the wild in August 2015.
CVSS 3.1 breakdown
| Base score | 8.8 (HIGH) |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| Attack vector | NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | REQUIRED |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity | HIGH |
| Availability | HIGH |
Weakness type (CWE)
Affected products
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References
- http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00009.html
- http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00010.html
- http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00014.html
- http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00015.html
- http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00021.html
- http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00016.html
- http://rhn.redhat.com/errata/RHSA-2015-1581.html
- http://www.mozilla.org/security/announce/2015/mfsa2015-78.html
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html
- http://www.securityfocus.com/bid/76249
- http://www.securitytracker.com/id/1033216
- http://www.ubuntu.com/usn/USN-2707-1
- https://blog.mozilla.org/security/2015/08/06/firefox-exploit-found-in-the-wild/
- https://bugzilla.mozilla.org/show_bug.cgi?id=1178058
- https://bugzilla.mozilla.org/show_bug.cgi?id=1179262
Data: NIST NVD + CISA KEV. NVD last modified 2026-04-22. Always verify against the vendor advisory before acting.