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CVE-2026-28221

🗓️ 29 Apr 2026 17:53:15Reported by GitHub_MType 
cve
 cve
🔗 web.nvd.nist.gov👁 68 Views🌐 WEB

CVE-2026-28221: pre-auth stack overflow in wazuh-remoted print_hex_string due to signed char promotion; remote via TCP 1514; fixed in 4.14.4.

Related
Detection
Affected
Refs
Paths
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2026-28221
29 Apr 202617:53
–attackerkb
bdu_fstec
BDU FSTEC
Wazuh print_hex_string Code Execution
13 May 202600:00
–bdu_fstec
circl
Circl
CVE-2026-28221
30 Apr 202604:07
–circl
cnnvd
CNNVD
Wazuh security vulnerabilities
29 Apr 202600:00
–cnnvd
cvelist
Cvelist
CVE-2026-28221 Wazuh: Pre-auth stack-based buffer overflow in wazuh-remoted print_hex_string() due to signed char promotion on x86_64
29 Apr 202617:53
–cvelist
euvd
EUVD
EUVD-2026-26270
29 Apr 202617:53
–euvd
mend
Mend
CVE-2026-28221
29 Apr 202617:53
–mend
nvd
NVD
CVE-2026-28221
29 Apr 202619:16
–nvd
ptsecurity
Positive Technologies
PT-2026-35966
29 Apr 202600:00
–ptsecurity
rapid7
Rapid7 Vulnerability Database (full)
CVE-2026-28221: Stack-based Buffer Overflow
29 Apr 202600:00
–rapid7
Rows per page
NVD
Vulners
Node
wazuhwazuhRange4.8.0–4.14.4
[
  {
    "vendor": "wazuh",
    "product": "wazuh",
    "versions": [
      {
        "version": ">= 4.8.0, < 4.14.4",
        "status": "affected"
      }
    ]
  }
]
ParameterPositionPathDescriptionCWE
length_prefixbinarytcp/1514Stack-based buffer overflow in print_hex_string() in wazuh-remoted when processing attacker-controlled bytes with an oversized length prefix on TCP/1514, causing an out-of-bounds write to a 2049-byte stack buffer. Remotely exploitable before authentication; also logs attacker-controlled hex dumps to /var/ossec/logs/ossec.log (log amplification). Patched in 4.14.4.CWE-121, CWE-400
src_buf[i]binarytcp/1514Stack-based buffer overflow in print_hex_string() in wazuh-remoted when processing attacker-controlled bytes with an oversized length prefix on TCP/1514, causing an out-of-bounds write to a 2049-byte stack buffer. Remotely exploitable before authentication; also logs attacker-controlled hex dumps to /var/ossec/logs/ossec.log (log amplification). Patched in 4.14.4.CWE-121, CWE-400

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