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Weekly Signal
Live intelligence Updated 22 Aug 2026 · 21:24 UTC

SAP · NetWeaver

CVE-2025-42999

SAP NetWeaver Deserialization Vulnerability

Recommended action

Validate affected assets and exposure now, then remediate on an accelerated schedule. SAP Security advisory 3604119

View response plan
CVSS9.1
EPSS12.4%
KEVYes
ExploitationConfirmed exploitation
RemediationExplicit patch identified ↓

Assessment

Why it matters

CISA lists this vulnerability as known to be exploited; exploitation is confirmed; EPSS is 12.4%; technical severity is CVSS 9.1.

SAP NetWeaver Visual Composer Metadata Uploader is vulnerable when a privileged user can upload untrusted or malicious content which, when deserialized, could potentially lead to a compromise of confidentiality, integrity, and availability of the host system.

Who should care

  • Teams operating NetWeaver
  • Vulnerability and exposure management teams
  • Security operations teams monitoring exploitation activity

Response plan

What I would do

  1. Confirm whether NetWeaver is present in the environment.
  2. Identify affected versions and establish whether vulnerable services are exposed or reachable.
  3. SAP Security advisory 3604119
  4. Review relevant security telemetry for evidence of attempted or successful exploitation.
  5. Document the remediation decision and track it to verified completion.

Treatment intelligence

Remediation intelligence

Not yet verified

Vendor sources are listed before government and third-party guidance. Confirm product applicability and change prerequisites before deployment.

Verification noteAutomated link verification has not completed for this guidance yet.

Technical details

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CWE
CWE-502
Affected versions
SAP NetWeaver (Version 7.5)
Fixed versions
No explicit fixed version is currently recorded.
Published
12 May 2025
Attack vector
Network
Privileges required
High
User interaction
None

Signal timeline

  1. CVE published
  2. Added to CISA KEV
  3. Latest EPSS score: 12.4%
  4. Signal calculated at 74

External references

Live public intelligence This assessment combines public-source evidence. Validate the affected product, version and exposure against your own environment before making a risk decision.