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Fencer Vulns
critical 9.8

CVE-2023-40309 json

Missing Authorization check in SAP CommonCryptoLib

published 2023-09-12 3 y ago modified 2026-06-17 4 mo ago also EUVD-2023-44901

cvss
9.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 59%
public exploits
0
none known

Summary

SAP CommonCryptoLib does not perform necessary authentication checks, which may result in missing or wrong authorization checks for an authenticated user, resulting in escalation of privileges. Depending on the application and the level of privileges acquired, an attacker could abuse functionality restricted to a particular user group as well as read, modify or delete restricted data.

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
2 y ago

Exploit prediction

0.88% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

  • SAP_SE SAP CommonCryptoLib
  • SAP_SE SAP NetWeaver AS ABAP, SAP NetWeaver AS Java and ABAP Platform of S/4HANA on-premise
  • SAP_SE SAP Web Dispatcher
  • SAP_SE SAP Content Server
  • SAP_SE SAP HANA Database
  • SAP_SE SAP Host Agent
  • SAP_SE SAP Extended Application Services and Runtime (XSA)
  • SAP_SE SAPSSOEXT

Classification

Weakness

References

Sources

Fencer Vulns 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.