PatchTheCVECVE-2015-3211: php-fpm allows local users to write to or create arbitrary files via a symlink attack.
CVE-2015-3211 is a medium-severity flaw (CVSS 5.5) affecting php-fpm. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
php-fpm allows local users to write to or create arbitrary files via a symlink attack.
Why this priority
- No elevated risk signals yet
No fix is published yet: follow the downgrade or mitigation steps.
Risk facts
| CVSS score | 5.5 (Medium) |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges needed | Low |
| User interaction | None |
| EPSS exploit chance | 0.4% (top 69%) |
| CISA exploited list | No |
| Weakness | CWE-59 |
| Published | 2017-08-25 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2015-3211?
php-fpm: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2015-3211 being exploited?
CVE-2015-3211 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2015-3211 affect?
CVE-2015-3211 affects php-fpm. Severity is medium (CVSS 5.5). php-fpm allows local users to write to or create arbitrary files via a symlink attack.
How urgent is CVE-2015-3211?
Priority 27/100. No elevated risk signals yet.