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CVE.org (no NVD analysis yet)· CNA suse

CVE-2026-109089: libXi XGetDeviceControl Control Type Mismatch Heap Buffer Overflow

HighCVSS 7.5 · v3.1—No exploit Fix available

Noroxi assessment

Priority: Monitor (action score 30/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.25% (FIRST EPSS).
  • Anyone who can reach it over the internet can trigger it. No account or password is required. A user must open a link or visit a page. Special conditions such as timing or configuration are required.
  • Fixed version: X.Org libXi 1.8.4; azl3 libXi 1.8.1-1 on Azure Linux 3.0 1.8.4-1.

Low priority for now. Upgrade to X.Org libXi 1.8.4; azl3 libXi 1.8.1-1 on Azure Linux 3.0 1.8.4-1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

A buffer overflow when handling DEVICE_RESOLUTION in libXi before 1.8.4 could overflow a heap, triggered by a malicious X server.

Published
Oct 27, 2026
Updated
Nov 4, 2026
EPSS
0.2% · 17th percentile

Report tools

JSON

Action score

30

Monitor

Low priority for now.

CVSS
30 / 40 · 7.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.2%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · suse
7.5
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-109089

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (suse). Independent of NVD's CPE analysis and usually ahead of it.

  • X.Org libXi

    • before 1.8.4affected · rpm

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:10libXibefore 1.8.1-7.el10_2.31.8.1-7.el10_2.3
AlmaLinux:10libXi-develbefore 1.8.1-7.el10_2.31.8.1-7.el10_2.3
AlmaLinux:8libXibefore 1.7.10-4.el8_101.7.10-4.el8_10
AlmaLinux:8libXi-develbefore 1.7.10-4.el8_101.7.10-4.el8_10
AlmaLinux:9libXibefore 1.7.10-8.el9_8.31.7.10-8.el9_8.3
AlmaLinux:9libXi-develbefore 1.7.10-8.el9_8.31.7.10-8.el9_8.3
Alpine:v3.24libxibefore 1.8.4-r01.8.4-r0
Debian:12libxifrom 0—
Debian:14libxibefore 2:1.8.4-12:1.8.4-1
openSUSE:TumbleweedlibXibefore 1.8.3-3.11.8.3-3.1
Rocky Linux:10libXibefore 0:1.8.1-7.el10_2.30:1.8.1-7.el10_2.3
Rocky Linux:8libXibefore 0:1.7.10-4.el8_100:1.7.10-4.el8_10
Rocky Linux:9libXibefore 0:1.7.10-8.el9_8.30:1.7.10-8.el9_8.3
SUSE:Linux Enterprise Micro 5.3libXibefore 1.7.9-150000.3.7.11.7.9-150000.3.7.1
SUSE:Linux Enterprise Server 12 SP5-LTSSlibXibefore 1.7.4-18.11.11.7.4-18.11.1
SUSE:Linux Micro 6.0libXibefore 1.8.1-159998.1.11.8.1-159998.1.1

Same product

x.org: all records

Other highest-scoring records for the same primary product.

  • CVE-2016-7946X.org libXi before 1.7.7 allows remote X servers to cause a denial of service (infinite loop) via vectors involving length fields.
    31Monitor
  • CVE-2016-7945Multiple integer overflows in X.org libXi before 1.7.7 allow remote X servers to cause a denial of service (out-of-bounds memory access or…
    31Monitor
  • CVE-2026-109090libXi XGetDeviceControl DEVICE_ENABLE Heap Buffer Overflow
    30Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2026-93545Sep 24, 2026 · Out-of-bounds read in libXi's XListInputDevices()
    26Monitor
  • ← EarlierCVE-2026-94281Sep 24, 2026 · Out-of-bounds read in libXi's XListInputDevices() class parsing
    26Monitor
  • ← EarlierCVE-2026-94282Sep 28, 2026 · Out-of-bounds read in libXi's XI2 enter/leave/focus cookie conversion
    22Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
X.Org libXi1.8.4Vendor (CNA)
azl3 libXi 1.8.1-1 on Azure Linux 3.01.8.4-1 · Release NotesMicrosoft (MSRC)
almalinux:libXi1.7.10-4.el8_10 · AlmaLinux:8Package registry (OSV)
almalinux:libXi-devel1.7.10-4.el8_10 · AlmaLinux:8Package registry (OSV)
alpine:libxi1.8.4-r0 · Alpine:v3.24Package registry (OSV)
debian:libxi2:1.8.4-1 · Debian:14Package registry (OSV)
opensuse:libXi1.8.3-3.1 · openSUSE:TumbleweedPackage registry (OSV)
rocky linux:libXi0:1.7.10-4.el8_10 · Rocky Linux:8Package registry (OSV)
suse:libXi1.8.1-159998.1.1 · SUSE:Linux Micro 6.0Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Published
  2. Fix recordedsame day
  3. TodayNov 13, 2026+17 d
EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-1090900 days apartlibXi XGetDeviceControl DEVICE_ENABLE Heap Buffer Overflow
    30Monitor

Not on record for this CVE: public bounty program.

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • Special conditions such as timing or configuration are required.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-122 · Heap-based Buffer Overflow

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

  1. SSVC exploitation— → none
  2. Exploit maturity— → none
  3. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records