No exploitation reportedFix available

CVE-2024-31142

Q: Is CVE-2024-31142 actively exploited?

Active exploitation of CVE-2024-31142 has not been confirmed. Its EPSS score was 17.4% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2024-31142?

CVE-2024-31142 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

No exploitation reported by the sources we read.

Published2024-05-16
Fixed in4.18.2 · 4.17.4 · 4.16.6 · 4.15.6
WeaknessCWE-693

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

Because of a logical error in XSA-407 (Branch Type Confusion), the mitigation is not applied properly when it is intended to be used. XSA-434 (Speculative Return Stack Overflow) uses the same infrastructure, so is equally impacted. For more details, see: https://xenbits.xen.org/xsa/advisory-407.html https://xenbits.xen.org/xsa/advisory-434.html

Timeline

dates in UTC

2024-05-1614:15CVE publishedNVD
2026-10-2319:23EPSS crossed 10 %FIRST EPSS

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-2024-31142?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2024-31142?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Xen

Branch	Affected	Fixed in	Source
4.18	≥ 4.18.0, < 4.18.2	4.18.2	NVD
4.17	≥ 4.17.0, < 4.17.4	4.17.4	NVD
4.16	≥ 4.16.0, < 4.16.6	4.16.6	NVD
4.15	< 4.15.6	4.15.6	NVD

Fedoraproject fedora

Branch	Affected	Fixed in	Source
38.x	= 38	no fix published	NVD
40.x	= 40	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 Xen to 4.18.2 · 4.17.4 · 4.16.6 · 4.15.6

Advisories and patches

xenbits.xenproject.orgPatch · Vendor Advisory
xenbits.xen.orgPatch · Vendor Advisory

Detection

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

Sources

NVDCVE recordread 2026-10-23
CISA-ADPSSVC decisionnone2024-05-20
OpenCVESSVC decisionnone—
CISA-ADPCVSS 3.17.52024-05-20
CISA-ADPweakness (CWE)CWE-6932024-05-20
FIRST EPSSEPSS score17.4 %read 2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Published: 2024-05-16
Last Modified: 2026-06-17
NVD status: Analyzed

Frequently asked questions

What is CVE-2024-31142?

Is CVE-2024-31142 actively exploited?

Active exploitation of CVE-2024-31142 has not been confirmed. Its EPSS score was 17.4% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2024-31142?

CVE-2024-31142 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

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