Security readout for executives and security teams
Plain-English summary
CVE-2025-29287 describes a critical file-upload flaw in the ueditor component of MCMS v5.4.3. If exposed, an attacker could upload a crafted file and execute code on the server. That can lead to full system compromise, data theft, website takeover, or service disruption.
Executive priority
Urgent for any confirmed MCMS v5.4.3 deployment. Prioritize exposure validation and containment because the vulnerability implies unauthenticated remote code execution with full impact. If MCMS is not present, business risk is limited to supplier or hosted-service dependencies.
Technical view
The CVE maps to CWE-434: unrestricted upload of a dangerous file. The record scores it CVSS 9.8: network exploitable, low complexity, no privileges, no user interaction, and high confidentiality, integrity, and availability impact. The bundle does not name a vendor patch or fixed version.
Likely exposure
Risk is highest for internet-facing MCMS v5.4.3 deployments with the ueditor upload component reachable. The structured affected-product fields are incomplete, so confirm exposure against actual installed MCMS versions and enabled components.
Exploitation context
The source bundle does not establish active exploitation. CISA KEV status is false in the provided data. Public references include a Gitee issue and a GitHub gist, but this analysis does not rely on or reproduce offensive detail.
Researcher notes
Evidence is sufficient to treat the issue as critical, but incomplete for product metadata, patch status, and real-world exploitation. Avoid assuming broader MCMS versions are affected unless vendor or CVE updates confirm them.
Mitigation direction
- Identify all MCMS deployments and confirm whether v5.4.3 is in use.
- Check MingSoft/MCMS guidance for patches, fixed versions, or official workarounds.
- Restrict public access to ueditor upload functionality where operationally possible.
- Apply strong upload validation and server-side execution restrictions.
- Monitor web roots and upload directories for unexpected executable files.
Validation and detection
- Inventory MCMS instances by version and exposed route surface.
- Confirm whether the ueditor upload component is enabled or externally reachable.
- Review web server logs for suspicious upload attempts or unexpected file writes.
- Inspect upload directories for files outside expected media types.
- Verify remediation against vendor guidance once an official fix is identified.
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-434: 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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program 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-2025-29287 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
- Critical
- CVSS
- 9.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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:U/C:H/I:H/A:H3.95.9CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
9.8CriticalVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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
- https://gitee.com/mingSoft/MCMS/issues/IBOOTXCVE reference, mitre
- https://gist.github.com/erdan111/38dcb5150b523436fe01249b2542f02f#file-cve-2025-29287CVE reference, mitre
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.
Unrestricted Upload of File with Dangerous Type
Unrestricted Upload of File with Dangerous Type represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.