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CVE-2026-7423

🗓️ 29 Apr 2026 18:36:28Reported by AMZNType 
cve
 cve
🔗 web.nvd.nist.gov👁 4 Views

Integer underflow in FreeRTOS-Plus-TCP ICMP echo handlers can crash via heap read; upgrade.

Related
Detection
Affected
Refs
ReporterTitlePublishedViews
Family
CNNVD
FreeRTOS-Plus-TCP 数字错误漏洞
29 Apr 202600:00
cnnvd
Cvelist
CVE-2026-7423 Integer Underflow in ICMP Echo Reply Processing in FreeRTOS-Plus-TCP
29 Apr 202618:36
cvelist
EUVD
EUVD-2026-26276
29 Apr 202618:36
euvd
NVD
CVE-2026-7423
29 Apr 202619:16
nvd
Positive Technologies
PT-2026-35974
29 Apr 202600:00
ptsecurity
Vulnrichment
CVE-2026-7423 Integer Underflow in ICMP Echo Reply Processing in FreeRTOS-Plus-TCP
29 Apr 202618:36
vulnrichment
NVD
Node
amazonfreertos-plus-tcpRange4.0.04.2.6
OR
amazonfreertos-plus-tcpRange4.3.04.4.1
[
  {
    "vendor": "AWS",
    "product": "FreeRTOS-Plus-TCP",
    "collectionURL": "https://github.com/FreeRTOS/FreeRTOS-Plus-TCP",
    "versions": [
      {
        "status": "affected",
        "version": "4.0.0",
        "lessThan": "4.2.6",
        "versionType": "semver"
      },
      {
        "status": "affected",
        "version": "4.3.0",
        "lessThan": "4.4.1",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "4.2.6"
      },
      {
        "status": "unaffected",
        "version": "4.4.1"
      }
    ],
    "defaultStatus": "unaffected"
  }
]

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04 May 2026 13:35Current
5.2Medium risk
Vulners AI Score5.2
CVSS 3.15.3 - 6.5
CVSS 46
EPSS0.00025
SSVC
4