Security readout for executives and security teams
Plain-English summary
CVE-2018-13287 is a Synology Router Manager permissions flaw. A configuration file was world-readable, allowing a remote authenticated user to obtain sensitive information. The issue affects SRM before 1.1.7-6941-1 and is primarily a confidentiality risk.
Executive priority
Treat this as a moderate-priority remediation. It does not indicate unauthenticated takeover, but it can expose sensitive information from router management systems, which may support follow-on attacks if ignored.
Technical view
The flaw is CWE-276: incorrect default permissions in synouser.conf. The CVSS 3.0 vector is AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N, meaning network-reachable authenticated users could read sensitive data without user interaction, but integrity and availability are not directly impacted.
Likely exposure
Exposure is most relevant for organizations with Synology routers running SRM before 1.1.7-6941-1, especially where untrusted or broad user populations have authenticated SRM access. The source bundle does not identify specific models or deployment counts.
Exploitation context
The CVE is not listed as KEV in the provided bundle, and no cited source states active exploitation. The practical prerequisite is valid authentication to the affected SRM environment.
Researcher notes
The provided evidence identifies the vulnerable file, weakness class, fixed-version boundary, and CVSS vector. It does not describe the exact sensitive fields exposed, affected router models, or confirmed exploitation. Avoid assuming broader Synology product impact without vendor confirmation.
Mitigation direction
- Identify Synology routers running SRM and record installed versions.
- Upgrade SRM to 1.1.7-6941-1 or later, following Synology guidance.
- Restrict SRM administrative access to trusted networks and accounts.
- Review SRM user accounts and remove unnecessary authenticated access.
Validation and detection
- Confirm SRM versions are 1.1.7-6941-1 or later.
- Verify synouser.conf is not world-readable after remediation.
- Review access logs for unusual authenticated access to sensitive configuration data.
- Confirm only authorized users can authenticate to SRM.
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-276: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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-2018-13287 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
- 6.5 (3.0)
- Known Exploited
- No
- Published
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/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.
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:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N2.83.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.0 score
6.5MediumVector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://www.synology.com/security/advisory/Synology_SA_18_34CVE 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.
Incorrect Default Permissions
Incorrect Default Permissions represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.