Security readout for executives and security teams
Plain-English summary
This flaw affects Joomla! 3.4.x before 3.4.6. A remote attacker could abuse directory traversal sequences inside an extension package's XML install file. The public sources do not define the exact business impact, so urgency depends on whether any legacy Joomla instances can process extension packages.
Executive priority
Prioritize confirmation of exposure. If any Joomla! 3.4.x pre-3.4.6 system exists, remediate promptly because the affected software is old and the impact is not clearly bounded in public records.
Technical view
CVE-2015-8564 is a Joomla! core directory traversal issue in versions 3.4.x before 3.4.6. The vector is directory traversal sequences in the XML install file within an extension package archive. The CVE records unspecified impact and provide no CVSS score or CWE classification.
Likely exposure
Exposure is most likely on Joomla! 3.4.x installations earlier than 3.4.6, particularly where extension package archives can be uploaded, installed, or otherwise processed. The bundle does not identify other affected products or versions.
Exploitation context
The provided sources do not show active exploitation, and the CVE is not listed as KEV in the bundle. They also do not provide exploit details. Treat exploitability as plausible for remote attackers but impact as unresolved from public evidence.
Researcher notes
The evidence is thin: affected range and vector are stated, but impact, CWE, CVSS, and exploitation details are absent. Avoid assuming file read, file write, or code execution without additional vendor or forensic evidence.
Mitigation direction
- Upgrade affected Joomla! 3.4.x installations to 3.4.6 or later.
- Review the Joomla! advisory for vendor-specific remediation guidance.
- Restrict extension installation to trusted administrators and trusted packages.
- Remove or retire legacy Joomla instances no longer needed.
Validation and detection
- Inventory Joomla! deployments and record exact version numbers.
- Flag any Joomla! 3.4.x instance earlier than 3.4.6.
- Review who can upload or install extension package archives.
- Check patch records against the Joomla! 2015-12-14 advisory.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
File access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2015-8564 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://developer.joomla.org/security-centre/634-20151214-core-directory-traversal.htmlCVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.