No exploitation reportedFix available

CVE-2023-5157

Q: Is CVE-2023-5157 actively exploited?

Active exploitation of CVE-2023-5157 has not been confirmed. Its EPSS score was 2.3% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2023-5157?

CVE-2023-5157 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

No exploitation reported by the sources we read.

Published2023-09-27
Fixed in10.8.4 · 10.7.5 · 10.6.9 · 10.5.17 · 10.4.26 · 10.3.36
WeaknessCWE-400

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A vulnerability was found in MariaDB. An OpenVAS port scan on ports 3306 and 4567 allows a malicious remote client to cause a denial of service.

Timeline

dates in UTC

2023-09-2715:19CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2023-5157?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-5157?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

MariaDB

Branch	Affected	Fixed in	Source
10.8	≥ 10.8.0, < 10.8.4	10.8.4	NVD
10.7	≥ 10.7.0, < 10.7.5	10.7.5	NVD
10.6	≥ 10.6.0, < 10.6.9	10.6.9	NVD
10.5	≥ 10.5.0, < 10.5.17	10.5.17	NVD
10.4	≥ 10.4.0, < 10.4.26	10.4.26	NVD
10.3	< 10.3.36	10.3.36	NVD

Redhat enterprise linux eus

Branch	Affected	Fixed in	Source
8.6	= 8.6	no fix published	NVD
8.8	= 8.8	no fix published	NVD
9.0	= 9.0	no fix published	NVD
9.2	= 9.2	no fix published	NVD

Redhat enterprise linux for ibm z systems

Branch	Affected	Fixed in	Source
8.0	= 8.0_s390x	no fix published	NVD
9.0	= 9.0_s390x	no fix published	NVD
9.2	= 9.2_s390x	no fix published	NVD

9 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update MariaDB to 10.8.4 · 10.7.5 · 10.6.9 · 10.5.17 · 10.4.26 · 10.3.36

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

CISA-ADPSSVC decisionnone2025-06-18
OpenCVESSVC decisionnone—
CNACVSS 3.17.5read 2026-10-23
NVDCVSS 3.17.5read 2026-10-23
CNAweakness (CWE)CWE-400read 2026-10-23
FIRST EPSSEPSS score2.3 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: 2023-09-27
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2023-5157?

A vulnerability was found in MariaDB. An OpenVAS port scan on ports 3306 and 4567 allows a malicious remote client to cause a denial of service.

Is CVE-2023-5157 actively exploited?

Active exploitation of CVE-2023-5157 has not been confirmed. Its EPSS score was 2.3% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-5157?

CVE-2023-5157 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Running MariaDB? Hear about its next vulnerability

Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».

Get alerts for this product CISA KEV additions, October 2026 Search CVEs

No credit card required · No monthly cap on website lookups · 250 API requests/month

Go further

Following what attackers exploit right now? The CISA KEV additions of the month, with their patch deadlines.
Running this software? Vulnerability monitoring alerts you to new vulnerabilities in your products.

Related vulnerabilities

Same product first, then the same vendor advisory and the same publication week.

Back to CVE Database