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Medium

Wazuh vulnerable to NULL pointer dereference in DecodeCiscat

Type: advisorySources: OSV

Wazuh is a free and open source platform used for threat prevention, detection, and response. Prior to 4.11.0, DecodeCiscat() implementation does not check the return the value of cJSON_GetObjectItem() for a possible NULL value in case of an error. A compromised agent can cause a crash of analysisd by sending a specially crafted message to the wazuh manager. An attacker who is able to craft and send an agent message to the wazuh manager can cause analysisd to crash and make it unavailable. This vulnerability is fixed in 4.11.0.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2025-62791
Confirmed fixed CVEs
Not specified
Updated in this feed
2 Nov 2026, 16:09 UTC · Revision 1

Source evidence

Wazuh vulnerable to NULL pointer dereference in DecodeCiscat

core-osv · Original source

Published 29 Oct 2025, 16:48 UTC

Wazuh is a free and open source platform used for threat prevention, detection, and response. Prior to 4.11.0, DecodeCiscat() implementation does not check the return the value of cJSON_GetObjectItem() for a possible NULL value in case of an error. A compromised agent can cause a crash of analysisd by sending a specially crafted message to the wazuh manager. An attacker who is able to craft and send an agent message to the wazuh manager can cause analysisd to crash and make it unavailable. This vulnerability is fixed in 4.11.0.

osv:CVE-2025-62791
Complete source record
{
  "id": "f661b80062db1c379a673a16e934e5ea61df6d15a82ef377aae66e492d65d0b2",
  "url": "https://osv.dev/vulnerability/CVE-2025-62791",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Wazuh vulnerable to NULL pointer dereference in DecodeCiscat",
    "summary": "Wazuh is a free and open source platform used for threat prevention, detection, and response. Prior to 4.11.0, DecodeCiscat() implementation does not check the return the value of cJSON_GetObjectItem() for a possible NULL value in case of an error. A compromised agent can cause a crash of analysisd by sending a specially crafted message to the wazuh manager. An attacker who is able to craft and send an agent message to the wazuh manager can cause analysisd to crash and make it unavailable. This vulnerability is fixed in 4.11.0.",
    "evidence": "osv:CVE-2025-62791",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2025-62791",
      "aliases": [
        "CVE-2025-62791",
        "GHSA-gcwf-6p6m-gvm7"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/wazuh/wazuh",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "b3de9acf06147d614f053e87f959a75a0a132e86"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "4.11.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "cpe": "cpe:2.3:a:wazuh:wazuh:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "4.11.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v3.13.1",
            "v3.13.0",
            "v3.12.0",
            "v3.8.0",
            "v3.7.0",
            "v3.6.1",
            "v3.6.0",
            "v3.5.0",
            "v3.2.0",
            "v3.1.0",
            "v2.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-62791.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:20.621305886Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/62xxx/CVE-2025-62791.json",
        "https://github.com/wazuh/wazuh/security/advisories/GHSA-gcwf-6p6m-gvm7",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-62791"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-252",
          "CWE-476"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/62xxx/CVE-2025-62791.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-62791",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 486952,
  "published_at": "2025-10-29T16:48:25.22+00:00"
}