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CVE REMEDIATION GUIDE
Review reviewHighResearch in progress

CVE-2025-68803 remediation guide

Linux Linux, SIMATIC S7-1500 CPU 1518-4 PN/DP MFP, SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP

In the Linux kernel, the following vulnerability has been resolved: NFSD: NFSv4 file creation neglects setting ACL An NFSv4 client that sets an ACL with a named principal during file creation retrieves the ACL afterwards, and finds that it is only a default ACL (based on the mode bits) and not the ACL that was requested during file creation. This violates RFC 8881 section 6.4.1.3: "the ACL attribute is set as given". The issue occurs in nfsd_create_setattr(), which calls nfsd_attrs_valid() to determine whether to call nfsd_setattr(). However, nfsd_attrs_valid() checks only for iattr changes...

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Research in progress

A verified fixed-version field is not available. Use the linked NVD and supporting references, then confirm the vendor-supported path before changing production systems.

ProductLinux Linux, SIMATIC S7-1500 CPU 1518-4 PN/DP MFP, SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP
Affected versions>= c5409ce523af40d5c3019717bc5b4f72038d48be < c182e1e0b7640f6bcc0c5ca8d473f7c57199ea3d, >= d52acd23a327cada5fb597591267cfc09f08bb1d < 75f91534f9acdfef77f8fa094313b7806f801725, >= c0cbe70742f4a70893cd6e5f6b10b6e89b6db95b < 60dbdef2ebc2317266a385e4debdb1bb0e57afe1, >= c0cbe70742f4a70893cd6e5f6b10b6e89b6db95b < 381261f24f4e4b41521c0e5ef5cc0b9a786a9862, >= c0cbe70742f4a70893cd6e5f6b10b6e89b6db95b < bf4e671c651534a307ab2fabba4926116beef8c3, >= c0cbe70742f4a70893cd6e5f6b10b6e89b6db95b < 214b396480061cbc8b16f2c518b2add7fbfa5192, >= c0cbe70742f4a70893cd6e5f6b10b6e89b6db95b < 913f7cf77bf14c13cfea70e89bcb6d0b22239562, >= 5.10.220 < 5.10.248, >= 5.15.154 < 5.15.198, >= 6.0, >= V3.1.6
Fixed versionsNo verified fixed-version field is available yet
Priority basisReview · CVSS 8 · EPSS 0.37%
01

Identify the affected asset

Confirm whether Linux Linux, SIMATIC S7-1500 CPU 1518-4 PN/DP MFP, SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP is installed, record the deployed version and installation path, and identify exposed interfaces.

  • Record the product name, package or appliance identifier, and installed version.
  • Identify internet-facing, administrative, API, and internal access paths.
  • Preserve the pre-change configuration and relevant service logs.
02

Validate the affected-version match

Compare the deployed version with the affected range: >= c5409ce523af40d5c3019717bc5b4f72038d48be < c182e1e0b7640f6bcc0c5ca8d473f7c57199ea3d, >= d52acd23a327cada5fb597591267cfc09f08bb1d < 75f91534f9acdfef77f8fa094313b7806f801725, >= c0cbe70742f4a70893cd6e5f6b10b6e89b6db95b < 60dbdef2ebc2317266a385e4debdb1bb0e57afe1, >= c0cbe70742f4a70893cd6e5f6b10b6e89b6db95b < 381261f24f4e4b41521c0e5ef5cc0b9a786a9862, >= c0cbe70742f4a70893cd6e5f6b10b6e89b6db95b < bf4e671c651534a307ab2fabba4926116beef8c3, >= c0cbe70742f4a70893cd6e5f6b10b6e89b6db95b < 214b396480061cbc8b16f2c518b2add7fbfa5192, >= c0cbe70742f4a70893cd6e5f6b10b6e89b6db95b < 913f7cf77bf14c13cfea70e89bcb6d0b22239562, >= 5.10.220 < 5.10.248, >= 5.15.154 < 5.15.198, >= 6.0, >= V3.1.6. Treat incomplete inventory results as unresolved.

03

Prioritize with independent signals

The CVSS severity warrants an early asset and exposure review. Combine this signal with asset criticality, exposure, compensating controls, and business impact.

04

Apply supported remediation

Follow the vendor advisory or supported update path. Current fixed-version status: No verified fixed-version field is available yet. Preserve configuration and rollback material before change.

05

Verify the result

Confirm the resulting version, service health, authentication and access paths, monitoring coverage, and relevant security logs.

  • Confirm the expected version and package state.
  • Run a functional health check for critical service paths.
  • Review authentication, error, application, and security monitoring logs.
  • Reassess exposure if the supported fix cannot be applied.

Operational boundary

This page does not replace the vendor advisory, support contract, change-management process, or recovery plan. Do not infer that an asset is unaffected from an incomplete inventory query or a missing fixed-version field.