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CVE-2026-34027 Wertheim GmbH CVE debrief

The Wertheim SafeController Software, AssemblyVersion 6.15.8328.28014, contains a vulnerability in the /safe/contract/uploadcustomdocuments endpoint. The application validates uploaded files based on the user-controlled HTTP Content-Type value and accepts the upload if this value contains an allowed string such as pdf, jpeg, tiff, or png. An authenticated attacker with any role or permission level can spoof the Content-Type value and upload arbitrary file content.

Vendor
Wertheim GmbH
Product
Wertheim SafeController Software for VAULT ROOMS (Safe Deposit Locker System)
CVSS
MEDIUM 5.3
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-15
Original CVE updated
2026-06-15
Advisory published
2026-06-15
Advisory updated
2026-06-15

Who should care

Users of Wertheim SafeController Software, AssemblyVersion 6.15.8328.28014, should be aware of this vulnerability and take necessary actions to mitigate it.

Technical summary

The vulnerability has a CVSS score of 5.3 and a severity of MEDIUM. The CVSS vector is CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X.

Defensive priority

MEDIUM

Recommended defensive actions

  • Update to a patched version of Wertheim SafeController Software, if available.
  • Implement proper server-side file type validation.
  • Restrict file uploads to only allow specific file types.

Evidence notes

The vendor and product information is not confirmed, but there is a reference to Sec Consult.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-34027 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-34027

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-34027 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-34027

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • Source reference

    Unverified legacy reference

    URL: https://r.sec-consult.com/wertheim

    551230f0-3615-47bd-b7cc-93e92e730bbf

  • Source reference

    Unverified legacy reference

    URL: https://wertheim-safes.com/safe-deposit-box-management/

    551230f0-3615-47bd-b7cc-93e92e730bbf

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.