Security readout for executives and security teams
Plain-English summary
This issue affects Synology Audio Station before 6.5.4-3367. A logged-in remote user could abuse path handling to delete files outside the intended area. It is not rated critical, but unauthorized file deletion can disrupt media services or damage stored data if weak accounts or broad permissions exist.
Executive priority
Treat as a targeted maintenance item, not an emergency, unless Audio Station is exposed to many users or sensitive shared storage.
Technical view
CVE-2022-27611 is a CWE-22 path traversal flaw in the Audio Station webapi component. The CVSS 3.1 score is 5.4, with network access, low complexity, low privileges, no user interaction, and limited integrity and availability impact. Public details say vectors are unspecified.
Likely exposure
Exposure is most likely on Synology NAS environments running Audio Station before 6.5.4-3367, especially where remote authenticated users can access the service.
Exploitation context
The source states remote authenticated users can delete arbitrary files. It is not in CISA KEV, and the provided sources do not show active exploitation or public exploit details.
Researcher notes
The key unknown is the unspecified vector. Validation should focus on version state, reachable webapi surface, authenticated role exposure, and file deletion telemetry. Avoid assuming confidentiality impact because the CVSS vector lists C:N.
Mitigation direction
- Update Synology Audio Station to 6.5.4-3367 or later.
- Review Synology advisory Synology_SA_21_21 for current vendor guidance.
- Limit Audio Station access to trusted users and networks.
- Remove unnecessary user access to Audio Station.
- Confirm backups protect files that Audio Station users can reach.
Validation and detection
- Inventory Synology NAS devices running Audio Station.
- Check Audio Station version against 6.5.4-3367.
- Verify remote access paths require intended authentication controls.
- Review logs for unusual file deletion activity.
- Confirm restricted users cannot manage unrelated file paths.
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.
CWE-22: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupFile 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-2022-27611 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
- Medium
- CVSS
- 5.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
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 vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L2.82.5Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.4MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
Source materials
- CVE List V5 sourceCVE List V5
- https://www.synology.com/security/advisory/Synology_SA_21_21CVE 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.
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.