CVE-2023-42477Network attack vector

Unauthenticated data access and modification via GRMG requests

Published Oct 10, 2023 · Updated Sep 18, 2024

SSRF in SAP NetWeaver AS Java 7.50 allows remote attackers to send requests through the GRMG Heartbeat application. The ServerGRMGApplication servlet accepts and processes GRMG requests but fails to restrict the server-side destination derived from crafted input. No authentication or user interaction is required; successful exploitation has limited read or write effects on application data without a reported service interruption.

CVSS severity6.5
Medium
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in SAP NetWeaver AS Java 7.50 allows remote attackers to send requests through the GRMG Heartbeat application. The ServerGRMGApplication servlet accepts and processes GRMG requests but fails to restrict the server-side destination derived from crafted input. No authentication or user interaction is required; successful exploitation has limited read or write effects on application data without a reported service interruption.

The record

CVE
CVE-2023-42477
Published
Oct 10, 2023
Updated
Sep 18, 2024
Vendor
SAP SE
Product
SAP NetWeaver Application Server Java
Classifications
CWE-918, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 10, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 18, 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?

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  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

6.5SAP SECVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/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 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-918Server-Side Request Forgery (SSRF)
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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