CVE-2025-27429
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedSAP S/4HANA allows an attacker with user privileges to exploit a vulnerability in the function module exposed via RFC. This flaw enables the injection of arbitrary ABAP code into the system, bypassing essential authorization checks. This vulnerability effectively functions as a backdoor, creating the risk of full system compromise, undermining the confidentiality, integrity and availability of the system.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceSAP S/4HANA contains a function module exposed via RFC that allows authenticated users with standard privileges to inject arbitrary ABAP code. The vulnerability bypasses authorization checks built into the function module, effectively creating a backdoor that enables full system compromise including data exfiltration, configuration changes, and service disruption.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify SAP S/4HANA versionExecute transaction SM51 or use SAPMMC to view the kernel version and release. Alternatively, use transaction SWNC to check the system version details.Affected if The installed S/4HANA version falls within the unpatched range for CVE-2025-27429 (compare your version to SAP security notes for this CVE).
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Locate exposed RFC function modulesUse transaction SM59 to view RFC destinations. Check for function modules exposed via RFC that allow code execution or data access. Inspect the destination type and attached function modules.Affected if A function module vulnerable to arbitrary ABAP code injection is exposed via RFC and accessible to users with standard privileges.
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Review user role assignmentsUse transaction PFCG to audit roles assigned to users. Identify roles that grant access to the vulnerable RFC function module. Check for roles with excessive privileges beyond typical business requirements.Affected if Users with standard privileges (non-administrative roles) have access to function modules that can execute arbitrary ABAP code.
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Inspect RFC authorization objectsUse transaction SUIM to search for authorization objects related to RFC access (such as S_RFC). Examine the authorization values assigned to standard users.Affected if Standard users have RFC authorization objects (e.g., S_RFC with broad access) that allow execution of function modules without proper restrictions.
A user is affected if their S/4HANA system has an exposed RFC function module that allows authenticated users with standard privileges to execute arbitrary ABAP code.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataApply SAP security notes/patches for this vulnerability immediately. Additionally, review and restrict RFC function module authorizations, disable unnecessary RFC exposures, and audit user roles for excessive privileges.
- Consultation12.0 h
- Implementation20.0 h
- Testing12.0 h
- Review / QA6.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-27429 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-27429 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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