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CVE-2023-40374

21
FAUCET Score

CVE-2023-40374 describes a denial-of-service vulnerability in IBM Db2 for Linux, UNIX, and Windows, including Db2 Connect Server version 11.5. An unauthenticated attacker can exploit this by submitting a specially crafted query, leading to a high-impact denial of service with no confidentiality or integrity impact. The vulnerability has a CVSS score of 7.5 (High) and is network-exploitable with low attack complexity. Currently, there is no public exploit code available, no evidence of active exploitation, and minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 11.5, <= 11.5.8CPE matchmatch criteria
cpe:2.3:a:ibm:db2:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.6
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.78%
Probability of exploitation in next 30 days
EPSS Percentile
52.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0078 is in the 28th percentile among its peer group of 51,553 CVEs.

Social Chatter

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

exchange.xforce.ibmcloud.com / vulnerabilities/263575
VDB EntryVendor Advisory
security.netapp.com / advisory/ntap-20231116-0007
Third Party Advisory
ibm.com / support/pages/node/7047261
PatchVendor Advisory