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TI-2021-04957 Aliases CVE-2021-21912GHSA-4m8w-whg9-q7f6

Incorrect default permissions in Advantech

Priority LOW 34CWE-276Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

A privilege escalation vulnerability exists in the Windows version of installation for Advantech R-SeeNet Advantech R-SeeNet 2.4.15 (30.07.2021). A specially-crafted file can be replaced in the system to escalate privileges to NT SYSTEM authority. An attacker can provide a malicious file to trigger this vulnerability.

Why it matters now

EPSS 0.0039 33rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
—AdvantechAdvantech R-SeeNet Advantech R-SeeNet 2.4.15 (30.07.2021)—No fix listedCNA
  • Advantech Vendor— Affected Advantech R-SeeNet Advantech R-SeeNet 2.4.15 (30.07.2021) Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:advantech:r-seenet:2.4.15:*:*:*:*:*:*:*2.4.15VulnerableAdvantech
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*not specified by NVDRunning onMicrosoft
  • cpe:2.3:a:advantech:r-seenet:2.4.15:*:*:*:*:*:*:* Versions 2.4.15 Vulnerable ·Advantech
  • cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-21912
  2. 2026-10-03 Alias added: GHSA-4m8w-whg9-q7f6

References

Exploit 1

  • TI-2023-05193 Advantech R-SeeNet Unauthenticated Read/Write CVSS 3.1CRITICAL 9.8
  • TI-2021-04850 OS command injection in Advantech CVSS 3.1CRITICAL 9.8
  • TI-2021-04846 Cross-site scripting in Advantech CVSS 3.1MEDIUM 6.1
  • TI-2022-03130 Stack-based buffer overflow in Advantech R-SeeNet CVSS 3.1CRITICAL 9.8
  • TI-2022-03129 Stack-based buffer overflow in Advantech R-SeeNet CVSS 3.1CRITICAL 9.8
  • TI-2023-02441 Advantech R-SeeNet Use of Hard-coded Credentials CVSS 3.1CRITICAL 9.8
See all 39 →

Sources

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