CVE-2023-40308Network attack vector

Component crash via out-of-bounds request processing

Published Sep 12, 2023 · Updated Sep 26, 2024

Out-of-bounds write in SAP CommonCryptoLib 8 allows remote attackers to crash affected SAP components via a request to an open port. The library writes beyond a memory buffer while processing the crafted request; SAP has not disclosed the affected function or request field. No authentication or user interaction is required, and the reported consequence is an availability-only component crash without data disclosure or modification.

CVSS severity7.5
High
EPSS probability0.75%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in SAP CommonCryptoLib 8 allows remote attackers to crash affected SAP components via a request to an open port. The library writes beyond a memory buffer while processing the crafted request; SAP has not disclosed the affected function or request field. No authentication or user interaction is required, and the reported consequence is an availability-only component crash without data disclosure or modification.

The record

CVE
CVE-2023-40308
Published
Sep 12, 2023
Updated
Sep 26, 2024
Vendor
SAP SE
Product
SAP Web Dispatcher
Classifications
CWE-787, T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 12, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 26, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=7.22EXT
  2. Affected versionversion=7.53
  3. Affected versionversion=7.54
  4. Affected versionversion=7.77
  5. Affected versionversion=7.85
  6. Affected versionversion=7.89

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

SAP SE · SAP Web Dispatcherversion=7.22EXT; version=7.53; version=7.54; version=7.77; version=7.85; version=7.89
SAP SE · SAP CommonCryptoLibversion=8
SAP SE · SAP Content Serverversion=6.50; version=7.53; version=7.54
SAP SE · SAP HANAversion=2.00
SAP SE · SAP Host Agentversion=722
SAP SE · SAP HANA Extended Application Services, Advanced Modelversion=SAP_EXTENDED_APP_SERVICES 1; version=XS_ADVANCED_RUNTIME 1.00

Published CVSS scores

7.5SAP SECVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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