CVE-2017-12183

Vendordebian, x.orgProductdebian linux, x serverDiscoveredJan 24, 2018UpdatedAug 29, 2025

xorg-x11-server before 1.19.5 was missing length validation in XFIXES extension allowing malicious X client to cause X server to crash or possibly execute arbitrary code.

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CVSS v3.1

9.8 CRITICAL

EPSS

4.49%

probability of exploitation in 30 days

CISA KEV

Not listed

no confirmed exploitation reported

News coverage

sources referencing this CVE

Related IOCs

seen in the same coverage

EPSS Trend

Aug 16, 2026 → Oct 6, 2026

▲ 0.26pp

4.23% → 4.49% over 10 tracked changes

CVSS v3.1 Detail

Attack VectorNETWORK

Attack ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

ScopeUNCHANGED

ConfidentialityHIGH

IntegrityHIGH

AvailabilityHIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Connections

3 relationships

Timeline

disclosure → media coverage

Jan 24, 2018

Disclosure — published as a CVE record. · last revised by NVD Aug 29, 2025