CVE-2026-25790 Vulnerability Analysis & Exploit Details

CVE-2026-25790
Vulnerability Scoring

4.9
/10
Medium Risk

The vulnerability CVE-2026-25790 could compromise system integrity but typically requires user interaction to be exploited.

Attack Complexity Details

  • Attack Complexity: Low
    Exploits can be performed without significant complexity or special conditions.
  • Attack Vector: Network
    Vulnerability is exploitable over a network without physical access.
  • Privileges Required: High
    High-level privileges are required for exploitation.
  • Scope: Unchanged
    Exploit remains within the originally vulnerable component.
  • User Interaction: None
    No user interaction is necessary for exploitation.

CVE-2026-25790 Details

Status: Analyzed

Last updated: 🕔 19 Mar 2026, 17:14 UTC
Originally published on: 🕖 17 Mar 2026, 19:16 UTC

Time between publication and last update: 1 days

CVSS Release: version 3

CVSS3 Source

security-advisories@github.com

CVSS3 Type

Secondary

CVSS3 Vector

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

CVE-2026-25790 Vulnerability Summary

CVE-2026-25790: Wazuh is a free and open source platform used for threat prevention, detection, and response. Starting in version 3.9.0 and prior to version 4.14.3, multiple stack-based buffer overflows exist in the Security Configuration Assessment (SCA) decoder (`wazuh-analysisd`). The use of `sprintf` with a floating-point (`%lf`) format specifier on a fixed-size 128-byte buffer allows a remote attacker to overflow the stack. A specially crafted JSON event can trigger this overflow, leading to a denial of service (crash) or potential RCE on the Wazuh manager. The vulnerability is located in `/src/analysisd/decoders/security_configuration_assessment.c`, within the `FillScanInfo` and `FillCheckEventInfo` functions. In multiple locations, a 128-byte buffer (`char value[OS_SIZE_128];`) is allocated on the stack to hold the string representation of a number from a JSON event. The code checks if the number is an integer or a double. If it's a double, it uses `sprintf(value, "%lf", ...)` to perform the conversion. This `sprintf` call is unbounded. If a floating-point number with a large exponent (e.g., `1.0e150`) is provided, `sprintf` will attempt to write its full string representation (a "1" followed by 150 zeros), which is larger than the 128-byte buffer, corrupting the stack. Version 4.14.3 patches the issue.

Assessing the Risk of CVE-2026-25790

Access Complexity Graph

The exploitability of CVE-2026-25790 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-2026-25790

The exploitability of CVE-2026-25790 is influenced by multiple factors. Security teams should analyze system configurations and apply appropriate countermeasures to mitigate threats.

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-2026-25790, 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-2026-25790, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: None
    CVE-2026-25790 has no significant impact on data confidentiality.
  • Integrity: None
    CVE-2026-25790 poses no threat to data integrity.
  • Availability: High
    CVE-2026-25790 can disrupt system operations, potentially causing complete denial of service (DoS).

CVE-2026-25790 References

External References

CWE Common Weakness Enumeration

CWE-787

Vulnerable Configurations

  • cpe:2.3:a:wazuh:wazuh:3.9.0:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:3.9.0:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:3.9.1:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:3.9.1:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:3.9.2:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:3.9.2:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:3.9.3:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:3.9.3:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:3.9.4:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:3.9.4:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:3.9.5:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:3.9.5:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:3.10.0:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:3.10.0:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:3.10.1:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:3.10.1:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:3.10.2:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:3.10.2:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:3.11.0:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:3.11.0:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:3.11.1:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:3.11.1:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:3.11.2:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:3.11.2:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:3.11.3:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:3.11.3:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:3.11.4:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:3.11.4:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:3.11.5:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:3.11.5:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:3.12.0:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:3.12.0:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:3.12.1:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:3.12.1:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:3.12.2:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:3.12.2:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:3.12.3:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:3.12.3:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:3.13.0:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:3.13.0:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:3.13.1:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:3.13.1:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:3.13.2:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:3.13.2:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:3.13.3:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:3.13.3:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.0.0:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.0.0:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.0.1:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.0.1:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.0.2:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.0.2:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.0.3:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.0.3:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.0.4:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.0.4:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.1.0:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.1.0:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.1.1:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.1.1:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.1.2:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.1.2:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.1.3:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.1.3:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.1.4:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.1.4:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.1.5:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.1.5:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.2.0:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.2.0:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.2.1:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.2.1:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.2.2:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.2.2:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.2.3:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.2.3:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.2.4:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.2.4:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.2.5:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.2.5:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.2.6:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.2.6:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.2.7:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.2.7:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.3.0:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.3.0:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.3.1:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.3.1:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.3.2:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.3.2:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.3.3:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.3.3:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.3.4:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.3.4:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.3.5:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.3.5:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.3.6:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.3.6:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.3.7:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.3.7:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.3.8:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.3.8:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.3.9:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.3.9:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.3.10:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.3.10:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.3.11:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.3.11:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.4.0:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.4.0:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.4.1:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.4.1:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.4.2:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.4.2:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.4.3:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.4.3:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.4.4:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.4.4:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.4.5:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.4.5:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.5.0:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.5.0:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.5.1:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.5.1:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.5.2:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.5.2:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.5.3:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.5.3:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.5.4:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.5.4:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.6.0:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.6.0:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.7.0:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.7.0:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.7.1:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.7.1:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.7.2:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.7.2:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.7.3:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.7.3:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.7.4:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.7.4:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.7.5:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.7.5:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.8.0:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.8.0:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.8.1:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.8.1:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.8.2:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.8.2:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.9.0:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.9.0:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.9.1:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.9.1:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.9.2:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.9.2:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.10.0:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.10.0:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.10.1:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.10.1:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.10.2:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.10.2:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.10.3:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.10.3:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.11.0:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.11.0:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.11.1:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.11.1:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.11.2:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.11.2:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.12.0:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.12.0:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.13.0:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.13.0:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.13.1:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.13.1:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.14.0:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.14.0:*:*:*:*:*:*:*
  • cpe:2.3:a:wazuh:wazuh:4.14.1:*:*:*:*:*:*:*
    cpe:2.3:a:wazuh:wazuh:4.14.1:*:*:*:*:*:*:*

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