CVE-2026-77234 Vulnerability Analysis & Exploit Details

CVE-2026-77234
Vulnerability Scoring

8.8
/10
Severe Risk

Cybersecurity professionals consider CVE-2026-77234 an immediate threat requiring urgent mitigation.

Attack Complexity Details

  • Attack Complexity: Low
    Exploits can be performed without significant complexity or special conditions.
  • Attack Vector: Local
    Vulnerability requires local system access.
  • Privileges Required: Low
    Some privileges are necessary to exploit the vulnerability.
  • Scope: Changed
    Successful exploitation can impact components beyond the vulnerable component.
  • User Interaction: None
    No user interaction is necessary for exploitation.

CVE-2026-77234 Details

Status: Analyzed

Last updated: 🕗 27 Aug 2026, 20:18 UTC
Originally published on: 🕕 21 Aug 2026, 18:16 UTC

Time between publication and last update: 6 days

CVSS Release: version 3

CVSS3 Source

ff89ba41-3aa1-4d27-914a-91399e9639e5

CVSS3 Type

Secondary

CVSS3 Vector

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

CVE-2026-77234 Vulnerability Summary

CVE-2026-77234: Improper input validation in FreeRTOS-Kernel before 11.3.1 might allow an unprivileged task on MPU-enabled ports to execute code in privileged kernel context. To remediate this issue, users should upgrade to version 11.3.1 or later.

Assessing the Risk of CVE-2026-77234

Access Complexity Graph

The exploitability of CVE-2026-77234 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).

Exploitability Analysis for CVE-2026-77234

CVE-2026-77234 presents an accessible attack vector with minimal effort required. Restricting access controls and implementing security updates are critical to reducing exploitation risks.

Understanding AC and PR

A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.

Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.

Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.

CVSS Score Breakdown Chart

Above is the CVSS Sub-score Breakdown for CVE-2026-77234, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.

CIA Impact Analysis

Below is the Impact Analysis for CVE-2026-77234, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: High
    Exploiting CVE-2026-77234 can result in unauthorized access to sensitive data, severely compromising data privacy.
  • Integrity: High
    CVE-2026-77234 could allow unauthorized modifications to data, potentially affecting system reliability and trust.
  • Availability: High
    CVE-2026-77234 can disrupt system operations, potentially causing complete denial of service (DoS).

CVE-2026-77234 References

External References

CWE Common Weakness Enumeration

CWE-863

Vulnerable Configurations

  • cpe:2.3:o:amazon:freertos:7.0.0:*:*:*:*:*:*:*
    cpe:2.3:o:amazon:freertos:7.0.0:*:*:*:*:*:*:*
  • cpe:2.3:o:amazon:freertos:7.0.1:*:*:*:*:*:*:*
    cpe:2.3:o:amazon:freertos:7.0.1:*:*:*:*:*:*:*
  • cpe:2.3:o:amazon:freertos:7.0.2:*:*:*:*:*:*:*
    cpe:2.3:o:amazon:freertos:7.0.2:*:*:*:*:*:*:*
  • cpe:2.3:o:amazon:freertos:7.1.0:*:*:*:*:*:*:*
    cpe:2.3:o:amazon:freertos:7.1.0:*:*:*:*:*:*:*
  • cpe:2.3:o:amazon:freertos:7.1.1:*:*:*:*:*:*:*
    cpe:2.3:o:amazon:freertos:7.1.1:*:*:*:*:*:*:*
  • cpe:2.3:o:amazon:freertos:7.2.0:*:*:*:*:*:*:*
    cpe:2.3:o:amazon:freertos:7.2.0:*:*:*:*:*:*:*
  • cpe:2.3:o:amazon:freertos:7.3.0:*:*:*:*:*:*:*
    cpe:2.3:o:amazon:freertos:7.3.0:*:*:*:*:*:*:*
  • cpe:2.3:o:amazon:freertos:7.4.0:*:*:*:*:*:*:*
    cpe:2.3:o:amazon:freertos:7.4.0:*:*:*:*:*:*:*
  • cpe:2.3:o:amazon:freertos:7.4.1:*:*:*:*:*:*:*
    cpe:2.3:o:amazon:freertos:7.4.1:*:*:*:*:*:*:*
  • cpe:2.3:o:amazon:freertos:7.4.2:*:*:*:*:*:*:*
    cpe:2.3:o:amazon:freertos:7.4.2:*:*:*:*:*:*:*
  • cpe:2.3:o:amazon:freertos:7.5.0:*:*:*:*:*:*:*
    cpe:2.3:o:amazon:freertos:7.5.0:*:*:*:*:*:*:*
  • cpe:2.3:o:amazon:freertos:7.5.2:*:*:*:*:*:*:*
    cpe:2.3:o:amazon:freertos:7.5.2:*:*:*:*:*:*:*
  • cpe:2.3:o:amazon:freertos:7.5.3:*:*:*:*:*:*:*
    cpe:2.3:o:amazon:freertos:7.5.3:*:*:*:*:*:*:*
  • cpe:2.3:o:amazon:freertos:7.6.0:*:*:*:*:*:*:*
    cpe:2.3:o:amazon:freertos:7.6.0:*:*:*:*:*:*:*
  • cpe:2.3:o:amazon:freertos:8.0.0:*:*:*:*:*:*:*
    cpe:2.3:o:amazon:freertos:8.0.0:*:*:*:*:*:*:*
  • cpe:2.3:o:amazon:freertos:8.0.1:*:*:*:*:*:*:*
    cpe:2.3:o:amazon:freertos:8.0.1:*:*:*:*:*:*:*
  • cpe:2.3:o:amazon:freertos:8.1.0:*:*:*:*:*:*:*
    cpe:2.3:o:amazon:freertos:8.1.0:*:*:*:*:*:*:*
  • cpe:2.3:o:amazon:freertos:8.1.1:*:*:*:*:*:*:*
    cpe:2.3:o:amazon:freertos:8.1.1:*:*:*:*:*:*:*
  • cpe:2.3:o:amazon:freertos:8.1.2:*:*:*:*:*:*:*
    cpe:2.3:o:amazon:freertos:8.1.2:*:*:*:*:*:*:*
  • cpe:2.3:o:amazon:freertos:8.2.0:*:*:*:*:*:*:*
    cpe:2.3:o:amazon:freertos:8.2.0:*:*:*:*:*:*:*
  • cpe:2.3:o:amazon:freertos:8.2.1:*:*:*:*:*:*:*
    cpe:2.3:o:amazon:freertos:8.2.1:*:*:*:*:*:*:*
  • cpe:2.3:o:amazon:freertos:8.2.2:*:*:*:*:*:*:*
    cpe:2.3:o:amazon:freertos:8.2.2:*:*:*:*:*:*:*
  • cpe:2.3:o:amazon:freertos:8.2.3:*:*:*:*:*:*:*
    cpe:2.3:o:amazon:freertos:8.2.3:*:*:*:*:*:*:*
  • cpe:2.3:o:amazon:freertos:9.0.0:-:*:*:*:*:*:*
    cpe:2.3:o:amazon:freertos:9.0.0:-:*:*:*:*:*:*
  • cpe:2.3:o:amazon:freertos:9.0.0:rc1:*:*:*:*:*:*
    cpe:2.3:o:amazon:freertos:9.0.0:rc1:*:*:*:*:*:*
  • cpe:2.3:o:amazon:freertos:9.0.0:rc2:*:*:*:*:*:*
    cpe:2.3:o:amazon:freertos:9.0.0:rc2:*:*:*:*:*:*
  • cpe:2.3:o:amazon:freertos:9.0.1:*:*:*:*:*:*:*
    cpe:2.3:o:amazon:freertos:9.0.1:*:*:*:*:*:*:*
  • cpe:2.3:o:amazon:freertos:10.0.0:*:*:*:*:*:*:*
    cpe:2.3:o:amazon:freertos:10.0.0:*:*:*:*:*:*:*
  • cpe:2.3:o:amazon:freertos:10.0.1:*:*:*:*:*:*:*
    cpe:2.3:o:amazon:freertos:10.0.1:*:*:*:*:*:*:*
  • cpe:2.3:o:amazon:freertos:10.1.0:*:*:*:*:*:*:*
    cpe:2.3:o:amazon:freertos:10.1.0:*:*:*:*:*:*:*
  • cpe:2.3:o:amazon:freertos:10.1.1:*:*:*:*:*:*:*
    cpe:2.3:o:amazon:freertos:10.1.1:*:*:*:*:*:*:*
  • cpe:2.3:o:amazon:freertos:10.2.0:*:*:*:*:*:*:*
    cpe:2.3:o:amazon:freertos:10.2.0:*:*:*:*:*:*:*
  • cpe:2.3:o:amazon:freertos:10.2.0:*:*:*:-:*:*:*
    cpe:2.3:o:amazon:freertos:10.2.0:*:*:*:-:*:*:*
  • cpe:2.3:o:amazon:freertos:10.2.1:*:*:*:*:*:*:*
    cpe:2.3:o:amazon:freertos:10.2.1:*:*:*:*:*:*:*
  • cpe:2.3:o:amazon:freertos:10.2.1:*:*:*:-:*:*:*
    cpe:2.3:o:amazon:freertos:10.2.1:*:*:*:-:*:*:*
  • cpe:2.3:o:amazon:freertos:10.3.0:*:*:*:*:*:*:*
    cpe:2.3:o:amazon:freertos:10.3.0:*:*:*:*:*:*:*
  • cpe:2.3:o:amazon:freertos:10.3.0:*:*:*:-:*:*:*
    cpe:2.3:o:amazon:freertos:10.3.0:*:*:*:-:*:*:*
  • cpe:2.3:o:amazon:freertos:10.3.1:*:*:*:*:*:*:*
    cpe:2.3:o:amazon:freertos:10.3.1:*:*:*:*:*:*:*
  • cpe:2.3:o:amazon:freertos:10.3.1:*:*:*:-:*:*:*
    cpe:2.3:o:amazon:freertos:10.3.1:*:*:*:-:*:*:*
  • cpe:2.3:o:amazon:freertos:10.4.0:*:*:*:*:*:*:*
    cpe:2.3:o:amazon:freertos:10.4.0:*:*:*:*:*:*:*
  • cpe:2.3:o:amazon:freertos:10.4.0:*:*:*:-:*:*:*
    cpe:2.3:o:amazon:freertos:10.4.0:*:*:*:-:*:*:*
  • cpe:2.3:o:amazon:freertos:10.4.1:*:*:*:*:*:*:*
    cpe:2.3:o:amazon:freertos:10.4.1:*:*:*:*:*:*:*
  • cpe:2.3:o:amazon:freertos:10.4.2:*:*:*:*:*:*:*
    cpe:2.3:o:amazon:freertos:10.4.2:*:*:*:*:*:*:*
  • cpe:2.3:o:amazon:freertos:10.4.2:*:*:*:-:*:*:*
    cpe:2.3:o:amazon:freertos:10.4.2:*:*:*:-:*:*:*
  • cpe:2.3:o:amazon:freertos:10.4.3:*:*:*:*:*:*:*
    cpe:2.3:o:amazon:freertos:10.4.3:*:*:*:*:*:*:*
  • cpe:2.3:o:amazon:freertos:10.4.3:*:*:*:-:*:*:*
    cpe:2.3:o:amazon:freertos:10.4.3:*:*:*:-:*:*:*
  • cpe:2.3:o:amazon:freertos:10.4.3:patch1:*:*:lts:*:*:*
    cpe:2.3:o:amazon:freertos:10.4.3:patch1:*:*:lts:*:*:*
  • cpe:2.3:o:amazon:freertos:10.4.3:patch2:*:*:lts:*:*:*
    cpe:2.3:o:amazon:freertos:10.4.3:patch2:*:*:lts:*:*:*
  • cpe:2.3:o:amazon:freertos:10.4.3:patch3:*:*:lts:*:*:*
    cpe:2.3:o:amazon:freertos:10.4.3:patch3:*:*:lts:*:*:*
  • cpe:2.3:o:amazon:freertos:10.4.4:*:*:*:-:*:*:*
    cpe:2.3:o:amazon:freertos:10.4.4:*:*:*:-:*:*:*
  • cpe:2.3:o:amazon:freertos:10.4.5:*:*:*:-:*:*:*
    cpe:2.3:o:amazon:freertos:10.4.5:*:*:*:-:*:*:*
  • cpe:2.3:o:amazon:freertos:10.4.6:*:*:*:-:*:*:*
    cpe:2.3:o:amazon:freertos:10.4.6:*:*:*:-:*:*:*
  • cpe:2.3:o:amazon:freertos:10.5.0:*:*:*:-:*:*:*
    cpe:2.3:o:amazon:freertos:10.5.0:*:*:*:-:*:*:*
  • cpe:2.3:o:amazon:freertos:10.5.1:*:*:*:-:*:*:*
    cpe:2.3:o:amazon:freertos:10.5.1:*:*:*:-:*:*:*
  • cpe:2.3:o:amazon:freertos:10.6.0:*:*:*:-:*:*:*
    cpe:2.3:o:amazon:freertos:10.6.0:*:*:*:-:*:*:*
  • cpe:2.3:o:amazon:freertos:10.6.1:*:*:*:-:*:*:*
    cpe:2.3:o:amazon:freertos:10.6.1:*:*:*:-:*:*:*
  • cpe:2.3:o:amazon:freertos:10.6.2:*:*:*:-:*:*:*
    cpe:2.3:o:amazon:freertos:10.6.2:*:*:*:-:*:*:*
  • cpe:2.3:o:amazon:freertos:11.0.0:*:*:*:-:*:*:*
    cpe:2.3:o:amazon:freertos:11.0.0:*:*:*:-:*:*:*
  • cpe:2.3:o:amazon:freertos:11.0.1:*:*:*:-:*:*:*
    cpe:2.3:o:amazon:freertos:11.0.1:*:*:*:-:*:*:*
  • cpe:2.3:o:amazon:freertos:11.1.0:*:*:*:-:*:*:*
    cpe:2.3:o:amazon:freertos:11.1.0:*:*:*:-:*:*:*
  • cpe:2.3:o:amazon:freertos:11.2.0:*:*:*:-:*:*:*
    cpe:2.3:o:amazon:freertos:11.2.0:*:*:*:-:*:*:*
  • cpe:2.3:o:amazon:freertos:11.3.0:*:*:*:-:*:*:*
    cpe:2.3:o:amazon:freertos:11.3.0:*:*:*:-:*:*:*

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