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CVE-2006-3853

16
FAUCET Score

CVE-2006-3853 describes a buffer overflow vulnerability in IBM Informix Dynamic Server (IDS) versions prior to 9.40.TC7 and 10.00.TC3, specifically when deployed on Windows operating systems. This flaw allows unauthenticated remote attackers to execute arbitrary code by supplying an excessively long username during authentication. The vulnerability has a CVSS score of 5.1, indicating a medium severity with network access, high attack complexity, and partial impact on confidentiality, integrity, and availability. While no public exploit code or active exploitation is reported, and community discussion is minimal, organizations using affected Informix versions on Windows should apply the recommended patches to mitigate this risk.

Impacted Technologies

VendorProductVersion(s)CPE
9.4CPE matchmatch criteria
cpe:2.3:a:ibm:informix_dynamic_server:9.4:*:*:*:*:*:*:*
9.40.tc5CPE matchmatch criteria
cpe:2.3:a:ibm:informix_dynamic_server:9.40.tc5:*:*:*:*:*:*:*
9.40.uc1CPE matchmatch criteria
cpe:2.3:a:ibm:informix_dynamic_server:9.40.uc1:*:*:*:*:*:*:*
9.40.uc2CPE matchmatch criteria
cpe:2.3:a:ibm:informix_dynamic_server:9.40.uc2:*:*:*:*:*:*:*
9.40.uc3CPE matchmatch criteria
cpe:2.3:a:ibm:informix_dynamic_server:9.40.uc3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.1MEDIUM

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

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
HIGH
Authentication
NONE
Exploitability Score
4.9
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
4.00%
Probability of exploitation in next 30 days
EPSS Percentile
89.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0400 is in the 86th percentile among its peer group of 19,958 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, 0.0 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 0.0 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/21301
PatchVendor Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/28122
www-1.ibm.com / support/docview.wss
Patch
databasesecurity.com / informix/DatabaseHackersHandbook-AttackingInformix.pdf
osvdb.org / 27685
securityfocus.com / archive/1/443133/100/0/threaded
securityfocus.com / archive/1/443149/100/0/threaded
securityfocus.com / bid/19264
Patch
vupen.com / english/advisories/2006/3077