Security readout for executives and security teams
Plain-English summary
CVE-2025-53251 is a critical file upload flaw in the An-Themes Pin WP WordPress theme before 7.2. A logged-in attacker could upload a dangerous file type, potentially placing a web shell on the server and taking over the site.
Executive priority
Treat this as urgent for any WordPress property using Pin WP. The business risk is website takeover, data exposure, defacement, malware hosting, and operational disruption. Prioritize inventory and remediation before routine maintenance.
Technical view
The issue is CWE-434 unrestricted upload of dangerous file type in Pin WP. CVSS 3.1 is 9.9 with network access, low complexity, low privileges required, no user interaction, changed scope, and high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is limited to WordPress installations using the An-Themes Pin WP theme below version 7.2. The CVSS vector indicates low privileges are required; the provided sources do not support unauthenticated exploitation.
Exploitation context
The source bundle does not show CISA KEV listing or other evidence of active exploitation. The described impact is serious because arbitrary dangerous file upload can enable a web shell and full site compromise.
Researcher notes
Evidence is limited to the CVE record, CVE List entry, and Patchstack VDB reference. The affected range is described as Pin WP before 7.2. No exploit availability, exploitation campaign, or detailed vendor advisory is provided in the bundle.
Mitigation direction
- Inventory WordPress sites for An-Themes Pin WP and installed version.
- Move off Pin WP versions below 7.2 if 7.2 or later is available.
- Check An-Themes and Patchstack guidance for the confirmed vendor fix.
- Restrict theme management and upload-capable accounts to trusted administrators.
- Review recent server files and WordPress accounts for signs of compromise.
Validation and detection
- Confirm whether each WordPress site uses the Pin WP theme.
- Record the exact Pin WP version and compare it with the below-7.2 affected range.
- Check web server uploads and theme directories for unexpected executable files.
- Review WordPress users, recent logins, and role changes after exposure windows.
- Confirm remediation by verifying Pin WP is no longer below version 7.2.
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-2025-53251 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
- 9.9 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/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:L/PR:L/UI:N/S:C/C:H/I:H/A:H3.16Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.9CriticalVector: CVSS:3.1/AV:N/AC:L/PR:L/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.