CVE-2016-3644: Symantec Advanced Threat Protection

High severity, CVSS 8.4. EPSS: 17.7% chance of exploitation in the next 30 days.

The AntiVirus Decomposer engine in Symantec Advanced Threat Protection (ATP); Symantec Data Center Security:Server (SDCS:S) 6.x through 6.6 MP1; Symantec Web Gateway; Symantec Endpoint Protection (SEP) before 12.1 RU6 MP5; Symantec Endpoint Protection (SEP) for Mac; Symantec Endpoint Protection (SEP) for Linux before 12.1 RU6 MP5; Symantec Protection Engine (SPE) before 7.0.5 HF01, 7.5.x before 7.5.3 HF03, 7.5.4 before HF01, and 7.8.0 before HF01; Symantec Protection for SharePoint Servers (SPSS) 6.0.3 through 6.0.5 before 6.0.5 HF 1.5 and 6.0.6 before HF 1.6; Symantec Mail Security for Microsoft Exchange (SMSMSE) before 7.0_3966002 HF1.1 and 7.5.x before 7.5_3966008 VHF1.2; Symantec Mail Security for Domino (SMSDOM) before 8.0.9 HF1.1 and 8.1.x before 8.1.3 HF1.2; CSAPI before 10.0.4 HF01; Symantec Message Gateway (SMG) before 10.6.1-4; Symantec Message Gateway for Service Providers (SMG-SP) 10.5 before patch 254 and 10.6 before patch 253; Norton AntiVirus, Norton Security, Norton Internet Security, and Norton 360 before NGC 22.7; Norton Security for Mac before 13.0.2; Norton Power Eraser (NPE) before 5.1; and Norton Bootable Removal Tool (NBRT) before 2016.1 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via modified MIME data in a message.

Affected products

  • Symantec Advanced Threat Protection: up to and including 2.0.3
  • Symantec Csapi: up to and including 10.0.4
  • Symantec Data Center Security Server: version 6.0 only; version 6.5 only; version 6.6 only
  • Symantec Endpoint Protection: version 12.1.6 only
  • Symantec Mail Security For Domino: from 8.0, up to and including 8.0.9; from 8.1, up to and including 8.1.3
  • Symantec Mail Security For Microsoft Exchange: from 7.0, up to and including 7.0.4; from 7.5, up to and including 7.5.4; version 6.5.8 only
  • Symantec Message Gateway: up to and including 10.6.1-3
  • Symantec Message Gateway For Service Providers: version 10.5 only; version 10.6 only
  • Symantec Ngc: up to and including 22.6
  • Symantec Norton 360: any version
  • Symantec Norton Antivirus: any version
  • Symantec Norton Bootable Removal Tool: up to and including 2016.0
  • Symantec Norton Internet Security: any version
  • Symantec Norton Power Eraser: up to and including 5.0
  • Symantec Norton Security: up to and including 13.0.1; any version
  • Symantec Norton Security With Backup: any version
  • Symantec Protection Engine: from 7.0.0, up to and including 7.0.5; from 7.5.0, up to and including 7.5.4; version 7.8.0 only
  • Symantec Protection For SharePoint Servers: from 6.0, up to and including 6.0.6; from 6.03, up to and including 6.05

Published 2016-06-30. Last modified 2026-06-17.