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Vulnerability Assessment

Weakness
CWE
CWE-20
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V2 - Validation and Business Logic Input validation, allowlisting
Impact

CVSS score of 8.4 (HIGH). Attack characteristics: local attack vector, low complexity, no privileges required, no user interaction not required. Public proof-of-concept exploit code is available. EPSS exploitation probability: 50.21%.
Exploit ScenarioDerived

Successful exploitation could compromise the high-severity affected system.
Act Now Prioritize within 24-48h. Why: HIGH severity + EPSS > 10%.
No patch listed yet 50.2% exploitation probability (EPSS)

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AnalysisAI

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. Rated high severity (CVSS 8.4), this vulnerability is no authentication required, low attack complexity. Public exploit code available and EPSS exploitation probability 50.2%.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

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Technical ContextAI · show details

This vulnerability is classified under CWE-20. 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 access violation) via a crafted RAR file that is mishandled during decompression. Affected products include: Symantec Mail Security For Microsoft Exchange, Symantec Norton Power Eraser, Symantec Protection Engine, Symantec Endpoint Protection, Symantec Message Gateway. Version information: through 6.6.

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Severity by source

NVD PRIMARY 8.4 HIGH
AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

DescriptionCVE.org

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 access violation) via a crafted RAR file that is mishandled during decompression.

Threat Intelligence Overview

Threat Score
4.7/10
Composite threat intelligence
EPSS Score
50.2%
Top 2% exploitable
Exploit
POC
Public exploit code exists
Data Quality
4 sources
Confidence: Medium
NVD CVE.org EPSS Exploit-DB

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity HIGH
CISA KEV No
Public POC Yes
EPSS 50.2%
Patch available No
Active threat Yes
Deciding rule
HIGH severity + EPSS > 10%
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
Poc
System Exposure· derived
Small
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

112
Low Medium High Critical
KEV: 0
EPSS: +50
CVSS: +42
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Remote Code Execution CRITICAL

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

Denial of Service MEDIUM

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

Affected Products (CPE)CVE.org

cpe:2.3:a:symantec:mail_security_for_microsoft_exchange:*:*:*:*:*:*:*:*
cpe:2.3:a:symantec:mail_security_for_microsoft_exchange:*:*:*:*:*:*:*:*
cpe:2.3:a:symantec:mail_security_for_microsoft_exchange:6.5.8:*:*:*:*:*:*:*
cpe:2.3:a:symantec:norton_power_eraser:*:*:*:*:*:*:*:*
cpe:2.3:a:symantec:protection_engine:*:*:*:*:*:*:*:*
cpe:2.3:a:symantec:protection_engine:*:*:*:*:*:*:*:*
cpe:2.3:a:symantec:protection_engine:7.8.0:*:*:*:*:*:*:*
cpe:2.3:a:symantec:endpoint_protection:12.1.6:mp1:*:*:*:*:*:*
cpe:2.3:a:symantec:endpoint_protection:12.1.6:mp1a:*:*:*:*:*:*
cpe:2.3:a:symantec:endpoint_protection:12.1.6:mp2:*:*:*:*:*:*
cpe:2.3:a:symantec:endpoint_protection:12.1.6:mp3:*:*:*:*:*:*
cpe:2.3:a:symantec:endpoint_protection:12.1.6:mp4:*:*:*:*:*:*
cpe:2.3:a:symantec:message_gateway:*:*:*:*:*:*:*:*
cpe:2.3:a:symantec:norton_360:*:*:*:*:*:*:*:*
cpe:2.3:a:symantec:norton_antivirus:*:*:*:*:*:*:*:*
cpe:2.3:a:symantec:norton_internet_security:*:*:*:*:*:*:*:*
cpe:2.3:a:symantec:norton_security:*:*:*:*:*:*:*:*
cpe:2.3:a:symantec:norton_security_with_backup:*:*:*:*:*:*:*:*
cpe:2.3:a:symantec:ngc:*:*:*:*:*:*:*:*
cpe:2.3:a:symantec:message_gateway_for_service_providers:10.5:*:*:*:*:*:*:*
+ 22 more

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References

Advisories & patches
ADVISORY https://www.symantec.com/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&year=&suid=20160628_00 REF http://www.securityfocus.com/bid/91434 REF http://www.securitytracker.com/id/1036198 REF http://www.securitytracker.com/id/1036199

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