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CVE-2008-4388

62
FAUCET Score

CVE-2008-4388 describes a critical vulnerability in the LaunchObj ActiveX control (launcher.dll) within Symantec AppStream Client versions 5.2.x before 5.2.2 SP3 MP1. This flaw allows remote attackers to execute arbitrary code by exploiting improper validation of downloaded files, specifically through the installAppMgr method and other unspecified methods. With a CVSS score of 9.3, this vulnerability is highly severe, requiring no authentication and having a medium attack complexity but leading to complete compromise of confidentiality, integrity, and availability. While not on the KEV catalog, exploit intelligence indicates the existence of a Metasploit module, suggesting readily available exploit code, though there is no evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
5.2CPE matchmatch criteria
cpe:2.3:a:symantec:appstream_client:5.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

9.3HIGH

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

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
37.72%
Probability of exploitation in next 30 days
EPSS Percentile
98.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
Metasploit: Symantec AppStream LaunchObj ActiveX Control Arbitrary File Download and Execute · Jan 15, 2009
ExploitDB: EDB-16512 · Nov 24, 2010
This CVE's current EPSS score of 0.3772 is in the 96th percentile among its peer group of 8,914 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

securitytracker.com / id
kb.cert.org / vuls/id/194505
US Government Resource
securityfocus.com / bid/33247
symantec.com / avcenter/security/Content/2009.01.15.html
PatchVendor Advisory