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CVE-2023-31621

24
FAUCET Score

CVE-2023-31621 describes a Denial of Service (DoS) vulnerability in the kc_var_col component of OpenLink Virtuoso open-source version 7.2.9, which can be triggered by crafted SQL statements. This vulnerability carries a CVSS score of 7.5 (HIGH), indicating it is remotely exploitable with low attack complexity and can lead to a complete loss of availability. There is currently no evidence of active exploitation, nor are there publicly available exploit modules in Metasploit, Nuclei, or ExploitDB. Furthermore, the vulnerability has garnered minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
7.2.9CPE matchmatch criteria
cpe:2.3:a:openlinksw:virtuoso:7.2.9:*:*:*:open_source:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.91%
Probability of exploitation in next 30 days
EPSS Percentile
56.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0091 is in the 31st percentile among its peer group of 51,551 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

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2023-31621Moderate

virtuoso-opensource: DoS in kc_var_col component

May 21, 2023

References

github.com / openlink/virtuoso-opensource/issues/1130
ExploitIssue TrackingPatch