Mozilla Firefox Security Feature Bypass Vulnerability

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

• cpe canonical/ubuntu linux12.04
• cpe canonical/ubuntu linux14.04
• cpe canonical/ubuntu linux15.04
• cpe mozilla/firefoxversion unspecified
• cpe mozilla/firefox osversion unspecified
• cpe oracle/solaris11.3
• cpe redhat/enterprise linux desktop5.0
• cpe suse/linux enterprise debuginfo11
• vendor Mozilla Firefoxversion unspecified

How to fix CVE-2015-4495

• Recommended remediation

  Apply updates per vendor instructions. CISA due date Jun 15, 2022.

• Official advisories

  • CISA KEV · cisa.gov
  • CVE.org · cve.org
  • FIRST EPSS · first.org
  • NIST NVD · nvd.nist.gov
  • VulnCheck KEV · vulncheck.com

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Aug 7, 2015 · Catalog

   Detected

   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.

2. May 25, 2022 · CISA KEV

   Known exploited

   Apply updates per vendor instructions.

3. Jun 15, 2022 · CISA KEV

   Remediation due

   Apply updates per vendor instructions.

4. Jun 16, 2026 · Catalog

   Updated

   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.

Sources

• CISA KEVConfirmed exploitationCVE-2015-4495

  Moxilla Firefox allows remote attackers to bypass the Same Origin Policy to read arbitrary files or gain privileges.

  cisa.gov
• CVE.orgVulnerability recordCVE-2015-4495

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2015-4495

  30-day exploitation probability 68.6%

  first.org
• Exploit DatabasePublic exploit reference37772

  Public archive entry. The exploit body is not stored here.

  exploit-db.com
• Metasploit ModulesPublic exploit moduleauxiliary_gather/firefox_pdfjs_file_theft

  Public module reference (normal). Module source is not copied into this catalog.

  rapid7.com
• NIST NVDVulnerability recordCVE-2015-4495

  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

  nvd.nist.gov
• VulnCheck KEVConfirmed exploitationCVE-2015-4495

  Moxilla Firefox allows remote attackers to bypass the Same Origin Policy to read arbitrary files or gain privileges.

  vulncheck.com

References

• Mailing List · lists.opensuse.org
• Mailing List · lists.opensuse.org
• Mailing List · lists.opensuse.org
• Mailing List · lists.opensuse.org
• Vendor Advisory · mozilla.org
• Issue Tracking · blog.mozilla.org
• VulnCheck exploitation evidence · docs.google.com
• CISA note · nvd.nist.gov
• VulnCheck exploitation evidence · cisa.gov
• VulnCheck exploitation evidence · cve.org
• VulnCheck exploitation evidence · trustwave.com

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.