Security readout for executives and security teams
Plain-English summary
CVE-2026-4542 affects SSCMS 4.7.0. An authenticated remote user can manipulate file path input in the layerImage endpoint, potentially causing unauthorized file operations. Public disclosure exists, but the provided sources do not confirm active exploitation. Business urgency is moderate, especially for internet-facing SSCMS systems with many user accounts.
Executive priority
Treat as a moderate-priority application risk. Prioritize systems exposed to the internet or used by many authenticated users. The main business concern is unauthorized file modification or deletion, not data theft based on the provided CVSS impact.
Technical view
The issue is a CWE-22 path traversal in LayerImageController.Submit.cs, involving the filePaths argument on the layerImage endpoint. VulDB rates it CVSS 2.0 5.5: network-accessible, low complexity, authentication required, no confidentiality impact, partial integrity and availability impact. The submission title describes arbitrary file deletion in SSCMS 4.7.0.
Likely exposure
Exposure is likely limited to organizations running SSCMS 4.7.0, especially where the application is reachable over a network and untrusted or lower-privileged authenticated users can access the affected layerImage functionality.
Exploitation context
Sources state the exploit has been publicly disclosed and may be used. The CVSS vector requires authentication. The provided bundle does not include CISA KEV status or any cited evidence of active exploitation in the wild.
Researcher notes
Evidence is limited to CVE/VulDB records and a third-party disclosure reference. No official patch, commit, or vendor advisory is included in the source bundle. Avoid assuming broader version impact beyond SSCMS 4.7.0 unless additional vendor evidence appears.
Mitigation direction
- Inventory SSCMS deployments and identify version 4.7.0 instances.
- Check SSCMS vendor or project guidance for an official fix or workaround.
- Restrict access to SSCMS administrative and media endpoints to trusted users and networks.
- Review permissions so application users cannot delete or modify unnecessary filesystem locations.
- Increase monitoring for suspicious file deletion or path traversal indicators.
Validation and detection
- Confirm whether SSCMS 4.7.0 is deployed in production or internet-facing environments.
- Verify who can authenticate to the affected layerImage endpoint.
- Review application logs for unusual layerImage requests or file path patterns.
- Check file integrity and deletion logs around SSCMS content directories.
- Track vendor advisories and VulDB updates for patch status changes.
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-2026-4542 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
- 5.5 (2.0)
- Known Exploited
- No
- Published
Vector: AV:N/AC:L/Au:S/C:N/I:P/A:P/E:POC/RL:ND/RC:UR
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.
AV:N/AC:L/Au:S/C:N/I:P/A:P/E:POC/RL:ND/RC:UR84.9Primary CVE scoreVulnerability scoring details
Base CVSS 2.0 score
5.5MediumVector: AV:N/AC:L/Au:S/C:N/I:P/A:P/E:POC/RL:ND/RC:UR
Source materials
- CVE List V5 sourceCVE List V5
- VDB-352359 | SSCMS layerImage Endpoint LayerImageController.Submit.cs path traversalCVE reference · vdb-entry, technical-description
- VDB-352359 | CTI Indicators (IOB, IOC, TTP, IOA)CVE reference · signature, permissions-required
- Submit #774689 | SSCMS V4.7.0 SSCMS Arbitrary File DeletionCVE reference · third-party-advisory
- https://www.yuque.com/la12138/pa2fpb/vlyutc51eb7vhwaz?singleDocCVE reference · exploit
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.