Security readout for executives and security teams
Plain-English summary
Synology Active Backup for Business has a high-severity flaw that can let an unauthenticated remote attacker read arbitrary files. For executives, the main risk is data exposure from a backup platform, which may hold or access sensitive operational information. The provided sources do not show active exploitation or specific fixed versions.
Executive priority
Treat as a near-term remediation item. It is high severity, remote, unauthenticated, and confidentiality-focused, but the provided sources do not establish active exploitation or confirmed patch details.
Technical view
CVE-2025-30028 affects Synology Active Backup for Business and is described as unauthorized remote arbitrary file read. CVSS 3.1 is 8.6: network-accessible, low complexity, no privileges, no user interaction, changed scope, high confidentiality impact. The bundle lists CWE-89, but the description centers on file disclosure.
Likely exposure
Exposure is likely limited to organizations running Synology Active Backup for Business, especially deployments reachable from untrusted networks. The source bundle marks the product broadly affected, but does not provide precise version boundaries or CPEs.
Exploitation context
The CVE is not listed as KEV in the provided bundle, and no cited source states active exploitation. The attack conditions are serious because the CVSS vector indicates remote, unauthenticated exploitation with low complexity.
Researcher notes
The bundle contains limited technical detail. It lists CWE-89 while describing arbitrary file read, so researchers should avoid assuming root cause without vendor detail. Validate exposure through inventory and version review, not exploit reproduction.
Mitigation direction
- Review Synology advisory Synology-SA-25:02 for fixed or affected versions.
- Upgrade Active Backup for Business according to Synology guidance when available.
- Reduce untrusted network access to affected services where operationally possible.
- Prioritize systems storing or accessing sensitive backup data.
- Monitor vendor updates for clarified version and remediation details.
Validation and detection
- Inventory all Synology Active Backup for Business deployments.
- Compare installed versions against Synology-SA-25:02 guidance.
- Identify instances reachable from the internet or untrusted networks.
- Review recent access logs for unusual remote file access indicators.
- Document compensating controls until vendor remediation is confirmed.
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-89: Database access and collection lookup
Injection into data stores can inform collection, data access, and exfiltration detection reviews. 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 lookupCVE-2025-30028 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
- High
- CVSS
- 8.6 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/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:N/UI:N/S:C/C:H/I:N/A:N3.94synologyVulnerability scoring details
Base CVSS 3.1 score
8.6HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/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
- Synology-SA-25:02 Active Backup for BusinessCVE 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.