Memory Corruption vulnerability in SAP NetWeaver Application Server for ABAP and ABAP Platform (SAP_SE SAP NetWeaver Application Server for ABAP and ABAP Platform)

CVE-2026-66767
HIGH 7.7

At a glance

Source
NVD
EPSS
EPSS 0.43 % · percentile 37 ()
State
PUBLISHED
Published
Updated
Assigner
sap
NVD status
Awaiting Analysis

Description

SAP NetWeaver Application Server for ABAP and ABAP Platform allows an unauthenticated user to send a specially crafted packet that triggers reprocessing of a previously buffered user request, potentially hijacking another user's session under narrow timing conditions. Successful exploitation could result in high impact on confidentiality and integrity, with low impact on availability of the application.

Weaknesses (CWE)

  • CWE-191 — Integer Underflow (Wrap or Wraparound)

References

Scores

VersionScoreVectorScored by
CVSS 3.1HIGH 7.7CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Lsap
CVSS 3.1HIGH 7.7CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:LNVD · cna@sap.com (Secondary)

European references

CERT-FR advisories

Affected products

ProductVersions
SAP_SE · SAP NetWeaver Application Server for ABAP and ABAP Platformaffected KRNL64NUC 7.22 ; affected 7.22EXT ; affected KRNL64UC 7.22 ; affected 7.53 ; affected 8.04 ; affected KERNEL 7.22

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD