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CVE-2018-7409

31
FAUCET Score

CVE-2018-7409 describes a critical buffer overflow vulnerability in the unicode_to_ansi_copy() function within the unixODBC DriverManager, affecting versions prior to 2.3.5. This flaw carries a CVSS score of 9.8, indicating a severe risk due to its network-based attack vector, low complexity, and potential for complete compromise of confidentiality, integrity, and availability. Despite its critical severity, there is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.3.5CPE matchmatch criteria
cpe:2.3:a:unixodbc:unixodbc:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
2.68%
Probability of exploitation in next 30 days
EPSS Percentile
84.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0268 is in the 75th percentile among its peer group of 36,829 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: unixODBC-0:2.3.1-14.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7.6 Extended Update SupportFixed in: unixODBC-0:2.3.1-14.el7_6
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: unixODBC
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: unixODBC64
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: unixODBC

Vendor Advisories (1)

redhatCVE-2018-7409Moderate

unixODBC: Buffer overflow in unicode_to_ansi_copy() can lead to crash or other unspecified impact

Jan 2, 2018

References

access.redhat.com / errata/RHSA-2019:2336
sourceforge.net / projects/unixodbc/files/unixODBC/2.3.5/ChangeLog/download
Release Notes
unixodbc.org / unixODBC-2.3.5.tar.gz
Product