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CVE-2025-42999 (GCVE-0-2025-42999)

Vulnerability from cvelistv5 – Published: 2025-05-13 00:17 – Updated: 2026-08-11 03:55
VLAI CISA Previdian
Title
Insecure Deserialization in SAP NetWeaver (Visual Composer development server)
Summary
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.
Severity
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
SSVC
Exploitation: active Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-05-12 00:00 UTC
CWE
  • CWE-502 - Deserialization of Untrusted Data
Assigner
References
Impacted products
Vendor Product Version CPE status
SAP_SE SAP NetWeaver (Visual Composer development server) Affected: VCFRAMEWORK 7.50
guessed Create a notification for this product.
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 903e9bb2-56b1-4f8e-8253-34e7a197cfd0

Vulnerability ID: CVE-2025-42999

Status: Confirmed

Status Updated: 2025-05-15 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2025-05-15
Asserted: 2025-05-15
Scope
Notes: KEV entry: SAP NetWeaver Deserialization Vulnerability | Affected: SAP / NetWeaver | Description: SAP NetWeaver Visual Composer Metadata Uploader contains a deserialization vulnerability that allows a privileged attacker to compromise the confidentiality, integrity, and availability of the host system by deserializing untrusted or malicious content. | Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. | Due date: 2025-06-05 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): SAP users must have an account to log in and access the patch: https://me.sap.com/notes/3604119 ; https://nvd.nist.gov/vuln/detail/CVE-2025-42999
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes CWE-502
Feed CISA Known Exploited Vulnerabilities Catalog
Product NetWeaver
Due Date 2025-06-05
Date Added 2025-05-15
Vendorproject SAP
Vulnerabilityname SAP NetWeaver Deserialization Vulnerability
Knownransomwarecampaignuse Unknown
References
Created: 2026-02-02 13:24 UTC | Updated: 2026-02-06 07:53 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 64ed0cb1-b533-41cb-8652-e6065bcab43e

Vulnerability ID: CVE-2025-42999

Status: Confirmed

Status Updated: 2026-06-01 10:37 UTC

Exploited: Yes

Timestamps
First Seen: 2026-06-01
Asserted: 2026-06-01
Scope
Notes: KEVIntel entry: Insecure Deserialization in SAP NetWeaver (Visual Composer development server) | Affected: SAP_SE / SAP NetWeaver (Visual Composer development server) | CVSS: 9.1 (CRITICAL) | EPSS: 0.10847 | Used in malware: unknown | Not yet in CISA KEV: False
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title Insecure Deserialization in SAP NetWeaver (Visual Composer development server)
Vendor SAP_SE
Product SAP NetWeaver (Visual Composer development server)
Added Date 2026-06-01T10:37:52.113Z
Cvss Score 9.1
Epss Score 0.10847
Cvss Severity CRITICAL
Epss Percentile 0.95292
Used In Malware unknown
Ahead Of Cisa Kev 
{
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  "unit": "day"
}
Not Yet In Cisa Kev False
References
Created: 2026-06-19 12:42 UTC | Updated: 2026-06-19 12:42 UTC
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.