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CVE-2026-26204

Wazuh is a free and open source platform used for threat prevention, detection, and response. From version 1.0.0 to before version 4.14.4, a heap-based out-of-bounds WRITE occurs in GetAlertData, resulting in writing a NULL byte exactly 1 byte before the start of the buffer allocated by strdup. Due to unsigned integer underflow and pointer arithmetic wrapping, the write lands at offset -1 from the buffer, corrupting heap metadata. A malicious actor can potentially leverage this issue through a c
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:f24ae45c76306fcd5b23a35d4f95f69a5edf7b7c47c8a057040969650905f465
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-191","description":"CWE-191: Integer Underflow (Wrap or Wraparound)","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:a187fc27e8c2e59c82ce24c8ad25e994f5e353179976bb52404d41765314db8b · sha256:a9549554ea0a7702… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-124","description":"CWE-124: Buffer Underwrite ('Buffer Underflow')","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:a187fc27e8c2e59c82ce24c8ad25e994f5e353179976bb52404d41765314db8b · sha256:a9549554ea0a7702… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"wazuh","vendor":"wazuh","versions":[{"status":"affected","version":">= 1.0.0, < 4.14.4"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:a187fc27e8c2e59c82ce24c8ad25e994f5e353179976bb52404d41765314db8b · sha256:a9549554ea0a7702… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":4.4,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"HIGH","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:a187fc27e8c2e59c82ce24c8ad25e994f5e353179976bb52404d41765314db8b · sha256:a9549554ea0a7702… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-191","description":"CWE-191: Integer Underflow (Wrap or Wraparound)","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:a187fc27e8c2e59c82ce24c8ad25e994f5e353179976bb52404d41765314db8b · sha256:a9549554ea0a7702… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-124","description":"CWE-124: Buffer Underwrite ('Buffer Underflow')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:a187fc27e8c2e59c82ce24c8ad25e994f5e353179976bb52404d41765314db8b · sha256:a9549554ea0a7702… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/wazuh/wazuh/releases/tag/v4.14.4","tags":["x_refsource_MISC"],"url":"https://github.com/wazuh/wazuh/releases/tag/v4.14.4"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a187fc27e8c2e59c82ce24c8ad25e994f5e353179976bb52404d41765314db8b · sha256:a9549554ea0a7702… · /containers/cna/references/1
{"name":"https://github.com/wazuh/wazuh/security/advisories/GHSA-j4c7-hwjw-8857","tags":["x_refsource_CONFIRM"],"url":"https://github.com/wazuh/wazuh/security/advisories/GHSA-j4c7-hwjw-8857"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a187fc27e8c2e59c82ce24c8ad25e994f5e353179976bb52404d41765314db8b · sha256:a9549554ea0a7702… · /containers/cna/references/0
{"tags":["exploit"],"url":"https://github.com/wazuh/wazuh/security/advisories/GHSA-j4c7-hwjw-8857"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:a187fc27e8c2e59c82ce24c8ad25e994f5e353179976bb52404d41765314db8b · sha256:a9549554ea0a7702… · /containers/adp/0/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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