Security readout for executives and security teams
Plain-English summary
This is a critical SAP NetWeaver Visual Composer issue where a privileged user can upload unsafe content that the server deserializes. Successful exploitation could compromise the host system’s confidentiality, integrity, and availability. Because CISA lists CVE-2025-42999 in KEV, treat this as urgent for any exposed or reachable Visual Composer development server.
Executive priority
Prioritize within the emergency SAP vulnerability queue. High privileges are required, but KEV status and potential host compromise make delay risky for affected SAP environments.
Technical view
CVE-2025-42999 is CWE-502 insecure deserialization in SAP NetWeaver Visual Composer Metadata Uploader, affecting VCFRAMEWORK 7.50. CVSS 9.1 reflects network attack vector, low complexity, high privileges required, no user interaction, changed scope, and high CIA impact. The bundle does not provide exploit mechanics, indicators, or detailed patch contents.
Likely exposure
Organizations using SAP NetWeaver Visual Composer development server with VCFRAMEWORK 7.50 are the stated exposure group. Risk is highest where the Metadata Uploader is reachable by privileged users beyond a tightly controlled admin group.
Exploitation context
Active exploitation is supported by CISA KEV inclusion. The public bundle does not provide timing, scale, indicators, or exploit details for CVE-2025-42999. The cited Onapsis article concerns CVE-2025-31324, so it should not be treated as direct evidence for this CVE beyond related SAP threat context.
Researcher notes
The strongest evidence is CVE metadata plus CISA KEV status. Available sources identify the component, CWE, impact, and affected version, but do not include exploit details, IOCs, or complete remediation text. Avoid extrapolating from CVE-2025-31324 to this CVE without separate evidence.
Mitigation direction
- Review and apply SAP Note 3604119 where applicable.
- Follow SAP Security Patch Day guidance for this CVE.
- Restrict Metadata Uploader access to approved privileged administrators only.
- Audit privileged SAP accounts with Visual Composer access.
- Monitor SAP and CISA updates for indicators or revised guidance.
Validation and detection
- Inventory SAP systems for VCFRAMEWORK 7.50 Visual Composer development server.
- Confirm whether SAP Note 3604119 applies to each instance.
- Verify Metadata Uploader is not broadly network-accessible.
- Review privileged-user activity for unexpected content uploads.
- Check CISA KEV entry for operational remediation expectations.
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-502: Code execution behavior lookup
Code execution and unsafe deserialization weaknesses often justify reviewing execution behavior and process 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 lookupCVE-2025-42999 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
- 9.1 (3.1)
- Known Exploited
- Yes
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:H/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.
CISA KEV status
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:H/UI:N/S:C/C:H/I:H/A:H2.36Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
9.1CriticalVector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://me.sap.com/notes/3604119CVE reference
- https://url.sap/sapsecuritypatchdayCVE reference
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-42999CVE reference · government-resource
- https://onapsis.com/blog/active-exploitation-of-sap-vulnerability-cve-2025-31324/CVE reference
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.
Deserialization of Untrusted Data
Deserialization of Untrusted Data represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.