CVE-2015-4495
KEVMozilla Firefox Security Feature Bypass Vulnerability
Description
Moxilla Firefox allows remote attackers to bypass the Same Origin Policy to read arbitrary files or gain privileges.
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HPublishedAug 8, 2015
Last modifiedJun 17, 2026
Added to KEVMay 25, 2022
Remediation dueJun 15, 2022
References
- lists.opensuse.org/opensuse-security-announce/2015-08/msg00009.htmlMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2015-08/msg00010.htmlMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2015-08/msg00014.htmlMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2015-08/msg00015.htmlMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2015-08/msg00021.htmlMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2015-09/msg00016.htmlMailing ListThird Party Advisory
- rhn.redhat.com/errata/RHSA-2015-1581.htmlThird Party Advisory
- mozilla.org/security/announce/2015/mfsa2015-78.htmlVendor Advisory
- oracle.com/technetwork/topics/security/bulletinapr2016-2952098.htmlPatchThird Party Advisory
- securityfocus.com/bid/76249Broken LinkThird Party Advisory
- securitytracker.com/id/1033216Broken LinkThird Party Advisory
- ubuntu.com/usn/USN-2707-1Third Party Advisory
0 recent articles mention this CVE
81
Risk assessment · Critical
Actively exploited. Patch immediately.
- Exploitation
- Confirmed in the wild (CISA KEV)
- Federal remediation deadline
- Overdue by 1594 days
- CVSS
- 8.8 HIGH
- EPSS (30-day exploit probability)
- 68.6% · top 1% of all CVEs
- Weakness
- NVD-CWE-noinfo
- Attack vector
- Network, remotely reachable
Recommended actions
- 1.Apply updates per vendor instructions.
- 2.Treat as emergency change: patch or isolate internet-facing instances first.
- 3.Review exposure: confirm which instances are reachable from the internet and restrict access until patched.
- 4.Hunt for compromise: review logs for the disclosure window, not just from the patch date.
Assessment is derived automatically from the live signals above; verify against your own asset inventory.