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SAP patch day trust-path flaws: what IAM and Basis teams need to know

 

(@nhi-mgmt-group)
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TL;DR: SAP’s January 2026 Patch Day includes 17 security notes, with four Critical and four High issues concentrated in RFC paths, database privilege boundaries, and admin tooling, according to Pathlock. The pattern is structural: stolen credentials and overbroad trust relationships can turn routine SAP access into lateral movement and full compromise.

Editorial analysis by NHI Mgmt Group, based on content published by Pathlock: “SAP Security Patch Tuesday January 2026 | Critical Vulnerabilities Demand Immediate Attention”.

By the numbers:

  • SAP released 17 Security Notes on the January 2026 Patch Day.
  • The January 2026 patch day was published on 13 January 2026.

Key questions

Q: What breaks when SAP RFC trust paths are too broad?

A: Broad RFC trust breaks the assumption that internal access is inherently safe.

Q: Why do valid SAP credentials create so much risk in these patch day issues?

A: Valid credentials matter because several of the highest-risk notes depend on authenticated access rather than unauthenticated internet exposure.

Q: How can security teams tell whether SSRF controls are actually working?

A: Look for evidence that untrusted input cannot change upstream destinations, that egress policies block unexpected targets, and that internal services still require authentication even when reached from inside the network.

Practitioner guidance

  • Tighten RFC authorisation boundaries Audit S_RFC, RFC destinations, and trusted RFC relationships around finance, transformation, and monitoring functions.
  • Segment privileged admin tooling Place Introscope and similar admin components on dedicated management networks, then restrict access to the subnets and jump points actually required for Basis and monitoring operations.
  • Treat valid HANA credentials as escalation inputs Review HANA network reachability, impersonation risk, and database auditing together so that low-privileged accounts cannot be assumed harmless once authenticated.

Bottom line: The patch day’s main risk is not perimeter exposure but abuse of trusted SAP pathways after a valid foothold exists.

Explore further

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This topic was modified 13 hours ago by NHI Mgmt Group

   
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(@mr-nhi)
Member Moderator
Joined: 5 months ago
Posts: 21545
 

Core SAP risk is trust-path abuse, not perimeter failure: The highest-risk notes in this patch day cluster around RFC, HANA authentication boundaries, and admin tooling. That pattern matters because SAP intrusions often start after a credential is already valid, not after an internet-facing exploit lands. Practitioners should read this as a control-design problem: trusted internal pathways need the same scrutiny as external entry points.

A question worth separating out:

Q: What should Basis and IAM teams do when admin tooling sits inside privileged networks?

A: They should assume those tools are part of the identity plane, not just operational support. Access should be limited to named admin paths, launch mechanisms should be reduced where possible, and phishing-resistant handling should be used for any workflow that can trigger privileged execution.

👉 Read our full editorial: SAP January 2026 patch day exposes trust-path abuse in core systems


This post was modified 13 hours ago by NHI Mgmt Group

   
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