PatchTheCVECVE-2017-5541: Directory traversal vulnerability in template/usererror.missing_extension.php in Symphony CMS before 2.6.10 al
CVE-2017-5541 is a medium-severity flaw (CVSS 5.3) affecting symphony. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Directory traversal vulnerability in template/usererror.missing_extension.php in Symphony CMS before 2.6.10 allows remote attackers to rename arbitrary files via a .. (dot dot) in the existing-folder and new-folder parameters.
Why this priority
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 5.3 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 2.5% (top 15%) |
| CISA exploited list | No |
| Weakness | CWE-22 |
| Published | 2017-01-20 |
| 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-2017-5541?
symphony: upgrade to newer than 2.6.9. Exact commands for each OS are on this page.
Is CVE-2017-5541 being exploited?
CVE-2017-5541 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-2017-5541 affect?
CVE-2017-5541 affects symphony. Severity is medium (CVSS 5.3). Directory traversal vulnerability in template/usererror.missing_extension.php in Symphony CMS before 2.6.10 allows remote attackers to rename arbitrary files via a .. (dot dot) in the existing-folder and new-folder parameters.
How urgent is CVE-2017-5541?
Priority 45/100. Remotely exploitable, no login, no user action
Software pages
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