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Vulnerability Assessment

Weakness
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Bounds checking, buffer size validation
MITRE ATT&CK

2 techniques across 2 tactics: Execution, Privilege Escalation

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

Impact

CVSS score of 7.3 (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: 29.05%.

Exploit ScenarioDerived

A local attacker with access to the system could corrupt memory to execute arbitrary code or crash the application. No authentication is required to exploit this vulnerability.

Act Now Prioritize within 24-48h. Why: HIGH severity + EPSS > 10%.
No patch listed yet 29.1% exploitation probability (EPSS)

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AnalysisAI

Buffer overflow in Dec2LHA.dll in 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. Rated high severity (CVSS 7.3), this vulnerability is no authentication required, low attack complexity. Public exploit code available and EPSS exploitation probability 29.1%.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Use memory-safe languages or bounds-checking. Enable ASLR, DEP/NX, stack canaries. Use safe string functions.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified as Buffer Overflow (CWE-119), which allows attackers to corrupt memory to execute arbitrary code or crash the application. Buffer overflow in Dec2LHA.dll in 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 via a crafted file. 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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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 7.3 HIGH
AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/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
Low
Integrity
Low
Availability
High

DescriptionCVE.org

Buffer overflow in Dec2LHA.dll in 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 via a crafted file.

Threat Intelligence Overview

EPSS Score
29.1%
Top 3% exploitable
Exploit
POC
Public exploit code exists
Data Quality
4 sources
Confidence: Medium

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 29.1%
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

85
Low Medium High Critical
KEV: 0
EPSS: +29
CVSS: +36
PoC: +20
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

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

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
CVE-2017-6327 HIGH POC
8.8 Aug 11

The Symantec Messaging Gateway before 10.6.3-267 can encounter an issue of remote code execution, which describes a situ

CVE-2012-0297 CRITICAL POC
10.0 May 21

The management GUI in Symantec Web Gateway 5.0.x before 5.0.3 does not properly restrict access to application scripts,

CVE-2012-2953 CRITICAL POC
10.0 Jul 23

The management console in Symantec Web Gateway 5.0.x before 5.0.3.18 allows remote attackers to execute arbitrary comman

CVE-2012-0299 CRITICAL POC
10.0 May 21

The file-management scripts in the management GUI in Symantec Web Gateway 5.0.x before 5.0.3 allow remote attackers to u

CVE-2017-6326 CRITICAL POC
10.0 Jun 26

The Symantec Messaging Gateway can encounter an issue of remote code execution, which describes a situation whereby an i

CVE-2013-5014 HIGH POC
7.5 Feb 14

The management console in Symantec Endpoint Protection Manager (SEPM) 11.0 before 11.0.7405.1424 and 12.1 before 12.1.40

CVE-2015-1486 HIGH POC
7.5 Aug 01

The management console in Symantec Endpoint Protection Manager (SEPM) 12.1 before 12.1-RU6-MP1 allows remote attackers t

CVE-2016-3645 CRITICAL POC
9.8 Jun 30

Integer overflow in the TNEF unpacker in the AntiVirus Decomposer engine in Symantec Advanced Threat Protection (ATP); S

CVE-2014-7285 MEDIUM POC
6.5 Dec 17

The management console on the Symantec Web Gateway (SWG) appliance before 5.2.2 allows remote authenticated users to exe

CVE-2015-1489 HIGH POC
8.5 Aug 01

The management console in Symantec Endpoint Protection Manager (SEPM) 12.1 before 12.1-RU6-MP1 allows remote authenticat

CVE-2013-5015 MEDIUM POC
6.5 Feb 14

SQL injection vulnerability in the management console in Symantec Endpoint Protection Manager (SEPM) 11.0 before 11.0.74

CVE-2016-2208 CRITICAL POC
9.1 May 19

The kernel component in Symantec Anti-Virus Engine (AVE) 20151.1 before 20151.1.1.4 allows remote attackers to execute a

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