CVE-2023-42480Network attack vector

User enumeration via unrestricted login attempts

Published Nov 14, 2023 · Updated Sep 3, 2024

Improper login-attempt restriction in SAP NetWeaver Application Server Java 7.50 allows remote attackers to identify valid user IDs. SAP has not disclosed which response or timing signal in the Logon application distinguishes valid identifiers during repeated attempts. No account is required, and the disclosed consequence is user-ID exposure without data modification or service interruption.

CVSS severity5.3
Medium
EPSS probability0.55%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper login-attempt restriction in SAP NetWeaver Application Server Java 7.50 allows remote attackers to identify valid user IDs. SAP has not disclosed which response or timing signal in the Logon application distinguishes valid identifiers during repeated attempts. No account is required, and the disclosed consequence is user-ID exposure without data modification or service interruption.

The record

CVE
CVE-2023-42480
Published
Nov 14, 2023
Updated
Sep 3, 2024
Vendor
SAP SE
Product
SAP NetWeaver Application Server Java
Classifications
CWE-307, CAPEC-49, T1087
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 14, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 3, 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=7.50

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

SAP SE · SAP NetWeaver Application Server Javaversion=7.50

Published CVSS scores

5.3SAP SECVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-307Improper Restriction of Excessive Authentication Attempts
CAPEC-49Password Brute Forcing
T1087Account Discovery

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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