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CVE-2017-5397
The cache directory on the local file system is set to be world writable. Firefox defaults to extracting libraries from this cache. This…
Critical9.8EPSS 3.6%
- Published
- Updated
- Reserved
- Assigned by
- mozilla
Description
The cache directory on the local file system is set to be world writable. Firefox defaults to extracting libraries from this cache. This allows for the possibility of an installed malicious application or tools with write access to the file system to replace files used by Firefox with their own versions. This vulnerability affects Firefox < 51.0.3.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | Critical9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 3.6% · top 10% of all CVEs (2 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Weakness
- Firefox for Android cache directory is world writable
- CWE-829 (opens in a new tab)
Affected products
Mozilla · Firefox
- affected unspecified – < 51.0.3
References (3)
- https://bugzilla.mozilla.org/show_bug.cgi?id=1337304 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 96144 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- https://www.mozilla.org/security/advisories/mfsa2017-04/ (opens in a new tab)x_refsource_CONFIRMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Record last updated .