Security readout for executives and security teams
Plain-English summary
Synology Hyper Backup had a path traversal flaw in Backup Task handling. A remote authenticated user could write specific files outside intended limits. The known impact is integrity-only and rated medium, but backup systems are operationally sensitive because they can affect recovery trust.
Executive priority
Patch in the normal vulnerability cycle, with faster handling for internet-reachable or multi-user Synology environments. The issue is not described as actively exploited, but backup integrity matters to incident recovery.
Technical view
CVE-2024-47273 is CWE-22 in Synology Hyper Backup before 4.1.2-4036. The CVSS 3.1 vector is AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N. The public description says vectors are unspecified, so validation should focus on version exposure and vendor guidance, not exploit recreation.
Likely exposure
Organizations running Synology Hyper Backup versions before 4.1.2-4036 are potentially exposed. Risk requires an authenticated remote user, so shared NAS administration, weak accounts, or broadly accessible DSM services raise concern.
Exploitation context
The source bundle does not show CISA KEV listing or active exploitation. Public details do not specify the vectors. Do not treat this as unauthenticated access or remote code execution based on available evidence.
Researcher notes
Evidence supports authenticated network path traversal with limited integrity impact. The affected vector is unspecified, and the CVE does not identify exact writable files. Avoid claims about privilege escalation, unauthenticated exploitation, or RCE unless Synology publishes more detail.
Mitigation direction
- Upgrade Synology Hyper Backup to 4.1.2-4036 or later.
- Review Synology release notes and advisory guidance for model-specific instructions.
- Restrict DSM and Hyper Backup access to trusted networks and users.
- Remove unnecessary accounts and enforce strong authentication for NAS access.
- Monitor for unexpected backup task changes or suspicious file modifications.
Validation and detection
- Inventory Synology devices and installed Hyper Backup package versions.
- Confirm whether any instance is below 4.1.2-4036.
- Check which users can access or manage Backup Task functionality.
- Review logs for unusual authenticated activity around backup jobs.
- Document remediation status per device and package version.
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-2024-47273 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
- 4.3 (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:N
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.
SSVC decision data
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:N2.81.4synologyVulnerability scoring details
Base CVSS 3.1 score
4.3MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- Release noteCVE reference, synology · vendor-advisory
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.