Security readout for executives and security teams
Plain-English summary
Project Pier 0.8.8 and earlier can allow anyone on the internet to upload a PHP file and run it on the server. That can give an attacker control of the web application host. Public exploit references exist, but the bundle does not show confirmed active exploitation.
Executive priority
Treat this as urgent for any exposed ProjectPier instance. The impact is server compromise with no authentication required, and public exploit references lower attacker effort. If ProjectPier is not present, priority is limited to confirming absence in asset inventories.
Technical view
The issue is an unauthenticated arbitrary file upload in tools/upload_file.php. The handler does not validate file type or require authentication, stores uploads in a web-accessible location with a predictable suffix, and allows uploaded PHP to execute. It maps to CWE-434 with CVSS 4.0 score 9.3.
Likely exposure
Exposure is most likely where legacy ProjectPier installations, especially 0.8.8 or earlier, remain internet-accessible. The bundle’s affected metadata is inconsistent, so asset owners should confirm installed versions and whether tools/upload_file.php is reachable.
Exploitation context
The source bundle cites Metasploit, Exploit-DB, and Packet Storm exploit references, indicating public exploit material exists. It does not cite CISA KEV listing or other evidence of active exploitation, so active exploitation should not be claimed from these sources alone.
Researcher notes
The core evidence supports unauthenticated file upload leading to RCE, but the affected-version metadata in the bundle conflicts with the narrative description. No patch status, maintainer advisory, or active exploitation evidence is provided. Validate exposure carefully before broad claims.
Mitigation direction
- Identify and retire or replace unsupported ProjectPier deployments where possible.
- Check vendor or maintainer guidance before assuming a specific patch exists.
- Restrict public access to ProjectPier until exposure is understood.
- Disable or protect the vulnerable upload handler if business operations allow.
- Prevent PHP execution from upload directories through server configuration.
Validation and detection
- Inventory internet-facing hosts for ProjectPier and confirm installed versions.
- Check whether tools/upload_file.php is externally reachable without authentication.
- Review web roots for unexpected PHP files in upload-accessible locations.
- Review logs for requests to tools/upload_file.php and subsequent uploaded-file access.
- Confirm any compensating controls block unauthenticated upload and PHP execution.
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-2012-10036 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 (4.0)
- Known Exploited
- No
- Published
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA: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.
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:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N——VulnCheckVulnerability scoring details
Base CVSS 4.0 score
9.3CriticalVector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
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://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/webapp/projectpier_upload_exec.rbCVE reference, VulnCheck · exploit
- https://www.exploit-db.com/exploits/21929CVE reference, VulnCheck · exploit
- https://packetstorm.news/files/id/117070CVE reference, VulnCheck · exploit
- https://web.archive.org/web/20120111090432/http://www.projectpier.org/CVE reference, VulnCheck · product
- https://www.opensourcecms.com/projectpier/CVE reference, VulnCheck · product
- https://www.vulncheck.com/advisories/project-pier-arbitrary-file-upload-rceCVE reference, VulnCheck · third-party-advisory
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.