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TI-2026-78898 Aliases CVE-2026-92208GHSA-64r7-8gpp-2vpj

Heap overflow in NoMachine mDNS parsing enables remote code execution

Priority MEDIUM 41CWE-122Published · Updated

Key facts

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

Attack profile from CVSS 3.0 · CNA. Fix status from CNA. Impact type from CWE-122 and the CVSS impact.

Summary

NoMachine installations from 9.8.2_1 are affected by a heap-based buffer overflow in the parsing of mDNS resource records (CWE-122). The code copies user-supplied data to a heap buffer without validating its length. A network-adjacent attacker can execute arbitrary code in the context of the service account, and no authentication is required.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

NoMachine mDNS Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NoMachine. Authentication is not required to exploit this vulnerability. The specific flaw exists within the parsing of mDNS resource records. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the service account. Was ZDI-CAN-30982.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00618 49th 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
No
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
NoMachineNoMachine9.8.2_1—No fix listedCNA
  • NoMachine VendorNoMachine Affected 9.8.2_1 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:nomachine:nomachine:*:*:*:*:*:*:*:*——NoMachine
  • cpe:2.3:a:nomachine:nomachine:*:*:*:*:*:*:*:* Versions — — ·NoMachine

Remediation

The sources list no fixed version for NoMachine.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Timeline

  1. 2026-10-21 Threatist record created from CVE-2026-92208
  2. 2026-10-21 Alias added: GHSA-64r7-8gpp-2vpj
  3. 2026-10-23 CISA SSVC decision points changed
  4. 2026-10-23 Priority changed: MEDIUM → LOW
  5. 2026-10-23 CISA SSVC decision points changed
  6. 2026-10-23 Priority changed: LOW → MEDIUM

References

Other 1

  • TI-2023-20294 An arbitrary file overwrite vulnerability in NoMachine Free Edition and Enterprise Client… CVSS 3.1CRITICAL 9.1
  • TI-2026-84863 Heap overflow in NoMachine web service allows remote code execution CVSS 3.0CRITICAL 9.8
  • TI-2018-00619 Improper input validation in NoMachine App for Android CVSS 3.0CRITICAL 9.8
  • TI-2017-09455 An unspecified server utility in NoMachine before 5.3.10 on Mac OS X and Linux allows… CVSS 3.0HIGH 8.8
  • TI-2026-15017 OS command injection in NoMachine CVSS 3.0HIGH 8.8
  • TI-2018-12800 NoMachine before 5.3.27 and 6.x before 6.3.6 allows attackers to gain privileges via a… CVSS 3.0HIGH 7.8
See all 31 →

Sources

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