Security readout for executives and security teams
Plain-English summary
CVE-2025-54693 is a critical file-upload flaw in the WordPress Form Block plugin by epiphyt through version 1.5.5. The public record says it can allow a dangerous file, including a web shell, to be uploaded to a server, creating potential full site compromise.
Executive priority
Treat this as urgent for any internet-facing WordPress estate using Form Block. The business risk is site takeover, data exposure, defacement, or service disruption, but active exploitation is not confirmed in the provided sources.
Technical view
The issue is CWE-434: unrestricted upload of a dangerous file type in form-block. CVSS 3.1 score is 9.0 with network attack vector, no privileges, no user interaction, high complexity, changed scope, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is limited by the provided evidence to WordPress sites running epiphyt Form Block through version 1.5.5. The CVSS vector indicates unauthenticated network reachability, but high attack complexity.
Exploitation context
The source bundle does not show CISA KEV listing or cite active exploitation. It does state possible web shell upload impact, which is severe if exploitable on an exposed WordPress site.
Researcher notes
Evidence is sparse: the bundle provides CVE metadata, CVSS, CWE-434, affected plugin/version range, and Patchstack reference. It does not include root-cause details, vulnerable endpoint, exploit prerequisites beyond CVSS, or a named fixed version.
Mitigation direction
- Identify WordPress sites using the Form Block plugin.
- Check whether installed Form Block versions are 1.5.5 or earlier.
- Review Patchstack and vendor guidance for patched versions or mitigation.
- Disable or remove the plugin where no safe update is available.
- Restrict upload handling and monitor webroot write locations.
Validation and detection
- Inventory WordPress plugins across production and staging sites.
- Confirm Form Block package name and version from trusted admin or asset data.
- Review web server uploads for unexpected executable files.
- Check WordPress and web server logs for suspicious upload activity.
- Verify remediation against current vendor or Patchstack guidance.
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 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-2025-54693 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 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/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.
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:H/PR:N/UI:N/S:C/C:H/I:H/A:H2.26Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9CriticalVector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Source materials
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.