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CVE-2006-4855

22
FAUCET Score

CVE-2006-4855 describes a local denial-of-service vulnerability in the SymEvent driver present across numerous Symantec products, including Norton Personal Firewall, Internet Security, AntiVirus, and Symantec Client Security. An attacker can trigger a system crash by sending invalid data via DeviceIoControl to the driver. With a CVSS score of 4.9, this vulnerability is considered of medium severity, requiring local access with low attack complexity to achieve a complete system availability impact. While there is an ExploitDB entry for this vulnerability, it is not listed in CISA's KEV catalog, and there is no evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
1.0CPE matchmatch criteria
cpe:2.3:a:symantec:client_security:1.0:*:*:*:*:*:*:*
1.0.0_b8.01.9378CPE matchmatch criteria
cpe:2.3:a:symantec:client_security:1.0.0_b8.01.9378:*:*:*:*:*:*:*
1.0.1CPE matchmatch criteria
cpe:2.3:a:symantec:client_security:1.0.1:*:*:*:*:*:*:*
1.0.1_build_8.01.425aCPE matchmatch criteria
cpe:2.3:a:symantec:client_security:1.0.1_build_8.01.425a:mr1:*:*:*:*:*:*
1.0.1_build_8.01.429cCPE matchmatch criteria
cpe:2.3:a:symantec:client_security:1.0.1_build_8.01.429c:mr2:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.9MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.29%
Probability of exploitation in next 30 days
EPSS Percentile
67.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-28588 · Sep 15, 2006
This CVE's current EPSS score of 0.0129 is in the 93rd percentile among its peer group of 3,050 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

secunia.com / advisories/21938
Vendor Advisory
securityreason.com / securityalert/1591
securityresponse.symantec.com / avcenter/security/Content/2006.09.20a.html
securitytracker.com / id
securitytracker.com / id
securitytracker.com / id
securitytracker.com / id
securitytracker.com / id
securitytracker.com / id
securitytracker.com / id
securitytracker.com / id
exchange.xforce.ibmcloud.com / vulnerabilities/28960
matousec.com / info/advisories/Norton-Insufficient-validation-of-SymEvent-driver-input-buffer.php
Vendor Advisory
securityfocus.com / archive/1/446111/100/0/threaded
securityfocus.com / bid/20051
Exploit
vupen.com / english/advisories/2006/3636
Vendor Advisory