X.Org Server XInput ProcXIPassiveUngrabDevice buffer overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.9$0-$5k2.02

Summaryinfo

A vulnerability classified as very critical was found in X.Org Server. Impacted is the function ProcXIPassiveUngrabDevice of the component XInput. The manipulation results in buffer overflow. This vulnerability was named CVE-2026-93523. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability was found in X.Org Server (version unknown). It has been classified as very critical. Affected is the function ProcXIPassiveUngrabDevice of the component XInput. The manipulation with an unknown input leads to a buffer overflow vulnerability. CWE is classifying the issue as CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. This is going to have an impact on confidentiality, integrity, and availability.

This vulnerability is traded as CVE-2026-93523. The exploitability is told to be easy. It is possible to launch the attack remotely. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 10/16/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.9
VulDB Meta Temp Score: 9.9

VulDB Base Score: 9.9
VulDB Temp Score: 9.9
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

10/15/2026 VulDB entry created
10/16/2026 +0 days Advisory disclosed
10/16/2026 +0 days VulDB entry last update

Sourcesinfo

Vendor: x.org

Status: Not defined

CVE: CVE-2026-93523 (🔒)
GCVE (CVE): GCVE-0-2026-93523
GCVE (VulDB): GCVE-100-421008

Entryinfo

Created: 10/16/2026 01:16
Changes: 10/16/2026 01:16 (48)
Complete: 🔍
Cache ID: 216::103

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