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CVE-2009-4643

26
FAUCET Score

CVE-2009-4643 describes a stack-based buffer overflow in the dsInstallerService.dll component of the Juniper Installer Service, impacting Juniper Odyssey Access Client 4.72.11421.0 and potentially other products. This critical vulnerability, with a CVSS score of 10.0, allows unauthenticated remote attackers to execute arbitrary code by sending a crafted, long string within a DSSETUPSERVICE_CMD_UNINSTALL command to the NeoterisSetupService named pipe. Despite its maximum severity, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this decade-old vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
4.72.11421.0CPE matchmatch criteria
cpe:2.3:a:juniper:odyssey_access_client:4.72.11421.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

10.0HIGH

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

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

Exploit Intelligence

EPSS Score
3.76%
Probability of exploitation in next 30 days
EPSS Percentile
88.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0376 is in the 80th percentile among its peer group of 51,506 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, 0.1 Mastodon, and 0.4 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

labs.idefense.com / intelligence/vulnerabilities/display.php
juniper.net / alerts/viewalert.jsp