No exploitation reportedFix available

CVE-2018-5744

Q: Is CVE-2018-5744 actively exploited?

Active exploitation of CVE-2018-5744 has not been confirmed. Its EPSS score was 3.4% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2018-5744?

CVE-2018-5744 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.

Published2019-10-09
Fixed in9.13.6 · 9.12.3 · 9.11.5 · 9.10.8
WeaknessCWE-772

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 failure to free memory can occur when processing messages having a specific combination of EDNS options. Versions affected are: BIND 9.10.7 -> 9.10.8-P1, 9.11.3 -> 9.11.5-P1, 9.12.0 -> 9.12.3-P1, and versions 9.10.7-S1 -> 9.11.5-S3 of BIND 9 Supported Preview Edition. Versions 9.13.0 -> 9.13.6 of the 9.13 development branch are also affected.

Timeline

dates in UTC

2019-10-0916:15CVE 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-2018-5744?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2018-5744?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Isc bind

Branch	Affected	Fixed in	Source
9.13	≥ 9.13.0, < 9.13.6	9.13.6	NVD
9.12	≥ 9.12.0, < 9.12.3	9.12.3	NVD
9.11	≥ 9.11.3, < 9.11.5	9.11.5	NVD
9.10	≥ 9.10.7, < 9.10.8	9.10.8	NVD
9.10	= 9.10.7	no fix published	NVD
9.10	= 9.10.8	no fix published	NVD
9.11	= 9.11.5	no fix published	NVD
9.12	= 9.12.3	no fix published	NVD

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

Fix

Update Isc bind to 9.13.6 · 9.12.3 · 9.11.5 · 9.10.8

Advisories and patches

kb.isc.orgVendor Advisory

Detection

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

Sources

NVDCVSS 3.17.5read 2026-10-23
CNACVSS 3.07.5read 2026-10-23
NVDCVSS 2.05read 2026-10-23
NVDweakness (CWE)CWE-772read 2026-10-23
FIRST EPSSEPSS score3.4 %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: 2019-10-09
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2018-5744?

Is CVE-2018-5744 actively exploited?

Active exploitation of CVE-2018-5744 has not been confirmed. Its EPSS score was 3.4% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-5744?

CVE-2018-5744 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.

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