CVE-2026-44254

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Source
https://cve.org/CVERecord?id=CVE-2026-44254
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44254.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-44254
Aliases
  • GHSA-9wm4-fp6c-hqgq
Published
2026-08-19T16:09:55Z
Modified
2026-09-20T14:24:42Z
Severity
  • 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Wazuh: Stack Out-of-Bounds Write in remoted Decompression Path
Details

Wazuh is a free and open source platform used for threat prevention, detection, and response. From 1.0.0 until 4.14.6 and 5.0.0-beta2, HandleSecureMessage() in src/remoted/secure.c passes a pointer inside its stack buffer to ReadSecMSG(), and src/os_crypto/shared/msgs.c decompresses up to OS_MAXSTR bytes at that offset. For an encrypted agent message on TCP port 1514 that expands to 65,536 bytes, os_zlib_uncompress() writes a terminating null byte beyond the end of the destination buffer. The resulting stack out-of-bounds write in the root-level remoted daemon can crash message processing and disrupt agent communications. This issue is fixed in versions 4.14.6 and 5.0.0-beta2.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-131",
        "CWE-787"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44254.json"
}
References

Affected packages

Git / github.com/wazuh/wazuh

Affected ranges

Type
GIT
Repo
https://github.com/wazuh/wazuh
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
44c2925b46bd058d2426bd44ed1b3e5d7b7b03b4
Introduced
cddd833300cb5af494ba7dab31192bae649eb184
Fixed
96772487fbdecd43cc83e284ee7aeb45e3cfcd96
Fixed
b58b3b2552497639b1b2a2b23e8de87e4ce9cf02
Database specific
Show details 
{
    "cpe":  [
        "cpe:2.3:a:wazuh:wazuh:*:*:*:*:*:*:*:*",
        "cpe:2.3:a:wazuh:wazuh:5.0.0:beta1:*:*:*:*:*:*"
    ],
    "extracted_events":  [
        {
            "introduced":  "1.0.0"
        },
        {
            "fixed":  "4.14.6"
        },
        {
            "introduced":  "5.0.0-beta1"
        },
        {
            "last_affected":  "5.0.0-beta1"
        }
    ],
    "source":  [
        "CPE_RANGE",
        "CPE_STRING",
        "REFERENCES"
    ]
}

Affected versions

5.*
5.0.0-beta1
coverity-w12-4.*
coverity-w12-4.14.5
coverity-w13-4.*
coverity-w13-4.14.5
coverity-w15-4.*
coverity-w15-4.14.5
coverity-w17-4.*
coverity-w17-4.14.6
coverity-w19-4.*
coverity-w19-4.14.6
coverity-w20-4.*
coverity-w20-4.14.6
coverity-w26-4.*
coverity-w26-4.14.6
v2.*
v2.0
v3.*
v3.1.0
v3.12.0
v3.13.0
v3.13.1
v3.2.0
v3.5.0
v3.6.0
v3.6.1
v3.7.0
v3.8.0
v4.*
v4.14.1
v4.14.3-rc1
v4.14.6-rc1
v4.14.6-rc2
v5.*
v5.0.0-beta1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44254.json"
vanir_signatures 
[
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "312243982569551611979848641343126168055",
            "length":  8736
        },
        "id":  "CVE-2026-44254-064d9c12",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/wazuh/wazuh/commit/96772487fbdecd43cc83e284ee7aeb45e3cfcd96",
        "target":  {
            "file":  "src/remoted/secure.c",
            "function":  "HandleSecureMessage"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "function_hash":  "315877931027140181476030362078766908548",
            "length":  6598
        },
        "id":  "CVE-2026-44254-90fc8fba",
        "signature_type":  "Function",
        "signature_version":  "v1",
        "source":  "https://github.com/wazuh/wazuh/commit/96772487fbdecd43cc83e284ee7aeb45e3cfcd96",
        "target":  {
            "file":  "src/os_crypto/shared/msgs.c",
            "function":  "ReadSecMSG"
        }
    },
    {
        "deprecated":  false,
        "digest":  {
            "line_hashes":  [
                "224192053887850630141301157970159709412",
                "1934363434683992422529634735717275013",
                "7820595461000133935349335166793396905",
                "95709601146541220411544924594655539723",
                "129768064923975732652346105513653722342",
                "253832570521790769986913736733281938655",
                "319075114133320055566367442343432001963",
                "113094608059400047133669508774771873773",
                "75341247743195882645120623028793052665",
                "30551880990697681489608382798119257405",
                "330995547033482582752710362370437350042",
                "89218813748563267774086358010174112117",
                "148055596128184117379436574595381093080",
                "338192102921520976276544426848115678431",
                "44317742669454298051090490073083868752",
                "147830074730980995479360925536847025876"
            ],
            "threshold":  0.9
        },
        "id":  "CVE-2026-44254-a99100f2",
        "signature_type":  "Line",
        "signature_version":  "v1",
        "source":  "https://github.com/wazuh/wazuh/commit/96772487fbdecd43cc83e284ee7aeb45e3cfcd96",
        "target":  {
            "file":  "src/os_crypto/shared/msgs.c"
        }
    }
]
vanir_signatures_modified 
"2026-09-20T14:24:42Z"