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Fencer Intel
critical 9.1

CVE-2025-42966 json

Insecure Deserialization vulnerability in SAP NetWeaver (XML Data Archiving Service)

published last yr. modified 4mo ago also EUVD-2025-20343

cvss
9.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 54%
public exploits
0
none known

Summary

SAP NetWeaver XML Data Archiving Service allows an authenticated attacker with administrative privileges to exploit an insecure Java deserialization vulnerability by sending a specially crafted serialized Java object. This could lead to high impact on confidentiality, integrity, and availability of the application.

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CISA SSVC

Exploitation
none
Automatable
no
Technical impact
total
Assessed
last yr.

Exploit prediction

0.73% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Affected products

  • SAP_SE SAP NetWeaver (XML Data Archiving Service)

Classification

Weakness
  • CWE-502 Deserialization of Untrusted Data

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.