Read the docs
TI-2023-30237 Aliases CVE-2023-53954GHSA-6hw7-52j7-xmq2

ActFax 10.10 Unquoted Path Services Privilege Escalation Vulnerability

Priority HIGH 76CWE-428Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
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-428.

Summary

ActFax 10.10 contains an unquoted service path vulnerability that allows local attackers to potentially escalate privileges by exploiting the ActiveFaxServiceNT service configuration. Attackers with write permissions to Program Files directories can inject a malicious ActSrvNT.exe executable to gain elevated system access when the service restarts.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00138 3rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

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

Affected products

VendorProductAffected versionsFixed inStatusSource
ActfaxActFax10.10—No fix listedCNA
  • ActFax VendorActfax Affected 10.10 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-53954
  2. 2026-10-03 Alias added: GHSA-6hw7-52j7-xmq2

References

  • TI-2012-05466 ActFax 4.32 Client Importer Buffer Overflow CVSS 4.0CRITICAL 9.3
  • TI-2019-15364 ActiveFax Server 6.92 Build 0316 - 'ActiveFaxServiceNT' Unquoted Service Path CVSS 4.0HIGH 8.5
  • TI-2020-12471 ActFax Version 7.10 Build 0335 (2020-05-25) is susceptible to a privilege escalation… CVSS 3.1HIGH 7.3

Sources