No exploitation reportedFix available

CVE-2026-83888

Q: Is CVE-2026-83888 actively exploited?

Active exploitation of CVE-2026-83888 has not been confirmed. Its EPSS score was 1.0% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2026-83888?

CVE-2026-83888 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Windows CD-ROM Driver Elevation of Privilege Vulnerability

No exploitation reported by the sources we read.

Published2026-10-13
WeaknessCWE-126

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

Buffer over-read in Windows CD-ROM Driver allows an unauthorized attacker to elevate privileges over a network.

Timeline

dates in UTC

2026-10-1319:20CVE 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-2026-83888?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-83888?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Microsoft windows server 2012

Branch	Affected	Fixed in	Source
—	all versions	no fix published	NVD
—	= r2	no fix published	NVD

Microsoft windows 10 1607

Branch	Affected	Fixed in	Source
10.0	< 10.0.14393.9612	10.0.14393.9612	NVD

Microsoft windows 10 1809

Branch	Affected	Fixed in	Source
10.0	< 10.0.17763.9376	10.0.17763.9376	NVD

11 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

Advisories and patches

msrc.microsoft.comPatch · Vendor Advisory

Detection

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

Sources

CISA-ADPSSVC decisionnone2026-10-13
OpenCVESSVC decisionnone—
CNACVSS 3.16.5read 2026-10-23
NVDCVSS 3.19.8read 2026-10-23
CNAweakness (CWE)CWE-126read 2026-10-23
FIRST EPSSEPSS score1.0 %2026-10-22

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2026-10-13
Last Modified: 2026-10-21
NVD status: Analyzed

Frequently asked questions

What is CVE-2026-83888?

Buffer over-read in Windows CD-ROM Driver allows an unauthorized attacker to elevate privileges over a network.

Is CVE-2026-83888 actively exploited?

Active exploitation of CVE-2026-83888 has not been confirmed. Its EPSS score was 1.0% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-83888?

CVE-2026-83888 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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