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TI-2021-09836 Aliases CVE-2021-28847GHSA-whgp-9qjc-434f

MobaXterm before 21.0 allows remote servers to cause a denial of service (Windows GUI…

Priority LOW 36Published · Updated

Key facts

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

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

Summary

MobaXterm before 21.0 allows remote servers to cause a denial of service (Windows GUI hang) via tab title change requests that are sent repeatedly at high speed, which results in many SetWindowTextA or SetWindowTextW calls.

Why it matters now

EPSS 0.01427 73rd percentileScored 2026-11-08
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
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:mobatek:mobaxterm:*:*:*:*:home:*:*:*before 21.0VulnerableMobatek
  • cpe:2.3:a:mobatek:mobaxterm:*:*:*:*:home:*:*:* Versions before 21.0 Vulnerable ·Mobatek

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-28847
  2. 2026-10-03 Alias added: GHSA-whgp-9qjc-434f

References

Advisory 2

  • TI-2022-17979 An access control issue in MobaXterm before v22.1 allows attackers to make connections to… CVSS 3.1HIGH 8.1
  • TI-2022-17980 When aborting a SFTP connection, MobaXterm before v22.1 sends a hardcoded password to the… CVSS 3.1CRITICAL 9.1
  • TI-2017-11289 The TELNET service in Mobatek MobaXterm 10.4 does not require authentication, which… CVSS 3.1CRITICAL 9.8
  • TI-2019-12274 In MobaXterm 11.1 and 12.1, the protocol handler is vulnerable to command injection. CVSS 3.1HIGH 8.8
  • TI-2019-05419 In MobaTek MobaXterm Personal Edition v11.1 Build 3860, the SSH private key and its… CVSS 3.0CRITICAL 9.8
  • TI-2019-10117 In MobaXterm 11.1, the mobaxterm: URI handler has an argument injection vulnerability… CVSS 3.0HIGH 8.8
See all 9 →

Sources

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