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TI-2026-21213 Aliases CVE-2026-26222GHSA-gfvx-3cf3-5x6x

DocLink .NET Remoting Unauthenticated Arbitrary File Read/Write RCE

Priority MEDIUM 50CWE-502Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-502.

Summary

Altec DocLink (now maintained by Beyond Limits Inc.) version 4.0.336.0 exposes insecure .NET Remoting endpoints over TCP and HTTP/SOAP via Altec.RDCHostService.exe using the ObjectURI "doclinkServer.soap". The service does not require authentication and is vulnerable to unsafe object unmarshalling, allowing remote attackers to read arbitrary files from the underlying system by specifying local file paths. Additionally, attackers can coerce SMB authentication via UNC paths and write arbitrary files to server locations. Because writable paths may be web-accessible under IIS, this can result in unauthenticated remote code execution or denial of service through file overwrite.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0086 58th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Beyond Limits Inc.Altec DocLink4.0.336.0—No fix listedCNA
  • Altec DocLink VendorBeyond Limits Inc. Affected 4.0.336.0 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:beyond:altec_doclink:4.0.336.0:*:*:*:*:*:*:*4.0.336.0VulnerableBeyond
  • cpe:2.3:a:beyond:altec_doclink:4.0.336.0:*:*:*:*:*:*:* Versions 4.0.336.0 Vulnerable ·Beyond

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-26222
  2. 2026-10-03 Alias added: GHSA-gfvx-3cf3-5x6x

References

Other 1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences