What is the CVSS score of CVE-2026-64076?

CVE-2026-64076 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 0.2%.

Linux CVE-2026-64076

Q: Which versions of Linux are affected by CVE-2026-64076?

A privilege escalation vulnerability in Linux kernel versions 5.13 through pre-6.18.34/7.0.11/7.1 allows low-privileged users to gain system-level access, risking unauthorized data access and system…. A patch is available.

Q: How to fix or mitigate CVE-2026-64076?

Within 24 hours: Identify all systems running Linux kernel versions 5.13 through builds prior to 6.18.34, 7.0.11, or 7.1 stable releases using kernel enumeration tools. Within 7 days: Deploy kernel updates to version 6.18.34, 7.0.11, or 7.1+ stable releases across all affected systems, coordinating with operations teams to schedule necessary reboots. Within 30 days: Verify patch deployment completion across the infrastructure and confirm that all systems are running remediated kernel versions through automated compliance scanning.

EUVD-2026-45649 HIGH

Race Condition (CWE-362)

2026-07-19 Linux

GHSA-w5f5-9vqp-v57f

Information Disclosure Linux Race Condition

7.8

CVSS 3.1 · Vendor: Linux

View

Vulnerability Assessment

Weakness

CWE

CWE-362

OWASP Top 10:2025

A06:2025 - Insecure Design

ASVS 5.0

V15 - Secure Coding and Architecture Concurrency control, locking

MITRE ATT&CK

1 technique across 1 tactic: Privilege Escalation

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

Patch available 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Jul 20, 2026

Local privilege escalation and memory-safety exposure in the Linux kernel netfilter bridge ebtables subsystem stems from a module-initialization race where nf_register_sockopt() runs before ebtables data structures are fully initialized, exposing the setsockopt/getsockopt interface globally too early. On affected kernels (5.13 through builds before the 6.18.34 / 7.0.11 / 7.1 stable fixes), a local low-privileged actor with the ability to reach ebtables sockopts during the init window can trigger operations on uninitialized state, risking high confidentiality, integrity, and availability impact (CVSS 7.8). There is no public exploit identified at time of analysis and EPSS is low (0.17%), so this is a code-correctness fix rather than an actively exploited threat.

Affected VersionsENISA

Linux patch: 6.18.34

Linux 5b53951cfc85329d29df9d07b1e905f4563546a5 <27414ff1b287ea9a2a11675149ec28e05539f3cc

Linux 5.13

Linux 5b53951cfc85329d29df9d07b1e905f4563546a5 <02d999dc69b3918dba2414932b5d95f1f75c76cb

Linux patch: 0

Linux patch: 7.1

Linux 5b53951cfc85329d29df9d07b1e905f4563546a5 <c647e2a21bbbaceda6cdb8a44a56f44d231dc4b4

Linux patch: 7.0.11

Affected Packages

euvd linux no fix

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (Linux) PRIMARY 7.8 HIGH

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

SUSE HIGH

Red Hat 5.5 MEDIUM

Primary rating from Vendor (Linux).

CVSS VectorVendor: Linux

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

CVSS changed

Jul 20, 2026 - 15:22 NVD

7.8 (HIGH)

Patch available

Jul 19, 2026 - 17:03 EUVD

CVE Published

Jul 19, 2026 - 15:39 cve.org

UNKNOWN (no severity yet)

CVE Published

Jul 19, 2026 - 15:39 cve.org

HIGH 7.8

DescriptionCVE.org

In the Linux kernel, the following vulnerability has been resolved:

netfilter: bridge: eb_tables: close module init race

sashiko reports for unrelated patch: Does the core ebtables initialization in ebtables.c suffer from a similar race? Once nf_register_sockopt() completes, the sockopts are exposed globally.

sockopt has to be registered last, just like in ip/ip6/arptables.

Executive ViewAI

Why It Matters

A privilege escalation vulnerability in Linux kernel versions 5.13 through pre-6.18.34/7.0.11/7.1 allows low-privileged users to gain system-level access, risking unauthorized data access and system compromise. No public exploit identified at time of analysis, but the severity requires immediate kernel updates across production infrastructure to eliminate vulnerability windows.

Recommended Action

Within 24 hours: Identify all systems running Linux kernel versions 5.13 through builds prior to 6.18.34, 7.0.11, or 7.1 stable releases using kernel enumeration tools. Within 7 days: Deploy kernel updates to version 6.18.34, 7.0.11, or 7.1+ stable releases across all affected systems, coordinating with operations teams to schedule necessary reboots. Within 30 days: Verify patch deployment completion across the infrastructure and confirm that all systems are running remediated kernel versions through automated compliance scanning.

Business Impact: High

Compensating Controls

Apply vendor patch.

Threat Intelligence Overview

EPSS Score

0.2%

Top 94% exploitable

Data Quality

6 sources

Confidence: High

EUVD

NVD

CVE.org

EPSS MSRC Vendor

VulDB

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC No

EPSS 0.2%

Patch available Yes

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

None

System Exposure· derived

Small

Automatable· derived

Human Impact

High

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +39

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Information Disclosure MEDIUM

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

Race Condition MEDIUM

Race conditions occur when multiple concurrent requests exploit the brief time gap between checking a condition and acting upon it (TOCTOU - Time of Check, Time of Use).

Same weakness CWE-362 – Race Condition

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7.5

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7.0

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7.0

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5.5

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6.8

CVE-2016-1757 HIGH POC

7.0

CVE-2016-8655 HIGH POC

7.8

CVE-2025-39964 MEDIUM POC

5.5

Same technique Information Disclosure

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CVE-2019-2725 CRITICAL POC

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CVE-2021-34523 CRITICAL POC

9.0

CVE-2013-2251 CRITICAL POC

9.8

CVE-2017-5638 CRITICAL POC

9.8

CVE-2025-24813 CRITICAL POC

9.8

CVE-2025-68613 HIGH POC

8.8

CVE-2015-1701 HIGH POC

7.8

CVE-2017-0147 HIGH POC

7.5

Vendor StatusVendor

SUSE

Severity: Important

Product	Status
SUSE Linux Enterprise Desktop 15 SP7	Affected
SUSE Linux Enterprise Desktop 15 SP7	Affected
SUSE Linux Enterprise High Availability Extension 15 SP7	Affected
SUSE Linux Enterprise High Availability Extension 15 SP7	Affected
SUSE Linux Enterprise High Availability Extension 16.0	Affected

References

Advisories & patches

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2026-64076 ADVISORY https://seclists.org/oss-sec/2026/q3/230 ADVISORY https://ubuntu.com/security/notices/USN-8593-1 ADVISORY https://vuldb.com/vuln/380255 REF https://git.kernel.org/stable/c/02d999dc69b3918dba2414932b5d95f1f75c76cb REF https://git.kernel.org/stable/c/27414ff1b287ea9a2a11675149ec28e05539f3cc REF https://git.kernel.org/stable/c/5fc488f46086d17e8e545d8104ddd95b175de218 REF https://git.kernel.org/stable/c/6bb35bdaabb22fd2d86b601904e928dbaa537941 REF https://git.kernel.org/stable/c/c647e2a21bbbaceda6cdb8a44a56f44d231dc4b4 REF https://git.kernel.org/stable/c/e0e7dec9dfc02987598e6a42bdfcab51dcc43e10

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