What is the CVSS score of CVE-2013-4673?

CVE-2013-4673 has a CVSS 2.0 base score of 5.8 (Medium). CVSS vector: AV:A/AC:L/Au:N/C:P/I:P/A:P. EPSS exploitation probability: 3.3%.

Symantec CVE-2013-4673

MEDIUM

Improper Input Validation (CWE-20)

2013-08-01 secure@symantec.com

RCE Symantec Web Gateway Web Gateway Appliance 8450 Web Gateway Appliance 8490

5.8

CVSS 2.0 · NVD

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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 5.8 (MEDIUM). Attack characteristics: adjacent network attack vector, low complexity. EPSS exploitation probability: 3.31%.
Exploit ScenarioDerived	Successful exploitation could compromise the medium-severity affected system.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).

No patch listed yet 3.3% exploitation probability (EPSS)

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AnalysisAI

The management console on the Symantec Web Gateway (SWG) appliance before 5.1.1 does not properly implement RADIUS authentication, which allows remote attackers to execute arbitrary code by. Rated medium severity (CVSS 5.8), this vulnerability is low attack complexity. No vendor patch available.

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 management console on the Symantec Web Gateway (SWG) appliance before 5.1.1 does not properly implement RADIUS authentication, which allows remote attackers to execute arbitrary code by leveraging access to the login prompt. Affected products include: Symantec Web Gateway, Symantec Web Gateway Appliance 8450, Symantec Web Gateway Appliance 8490. Version information: before 5.1.1.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 5.8 MEDIUM

AV:A/AC:L/Au:N/C:P/I:P/A:P

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Adjacent

Attack Complexity

Low

Confidentiality

Integrity

Availability

DescriptionCVE.org

Threat Intelligence Overview

EPSS Score

3.3%

Top 13% exploitable

Data Quality

3 sources

Confidence: Low

NVD

CVE.org

EPSS

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 MEDIUM

CISA KEV No

Public POC No

EPSS 3.3%

Patch available No

Active threat No

Deciding rule

MEDIUM severity (CVSS 4.0-6.9)

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

None

System Exposure· derived

Controlled

Automatable· derived

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +3

CVSS: +29

PoC: 0

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.

Affected Products (CPE)CVE.org

cpe:2.3:a:symantec:web_gateway:*:*:*:*:*:*:*:*

cpe:2.3:a:symantec:web_gateway:5.0:*:*:*:*:*:*:*

cpe:2.3:a:symantec:web_gateway:5.0.1:*:*:*:*:*:*:*

cpe:2.3:a:symantec:web_gateway:5.0.2:*:*:*:*:*:*:*

cpe:2.3:a:symantec:web_gateway:5.0.3:*:*:*:*:*:*:*

cpe:2.3:a:symantec:web_gateway:5.0.3.18:*:*:*:*:*:*:*

cpe:2.3:h:symantec:web_gateway_appliance_8450:-:*:*:*:*:*:*:*

cpe:2.3:h:symantec:web_gateway_appliance_8490:-:*:*:*:*:*:*:*

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References

Advisories & patches

ADVISORY http://www.symantec.com/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&year=&suid=20130725_00 REF http://osvdb.org/95702 REF http://www.securityfocus.com/bid/61105 REF https://exchange.xforce.ibmcloud.com/vulnerabilities/85990

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