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CVE-2026-11809 UpdateHub probe: uninitialized-heap out-of-bounds read of network-supplied metadata

🗓️ 10 Aug 2026 20:36:33Reported by zephyrType 
cvelist
 cvelist
🔗 www.cve.org👁 4 Views

The UpdateHub OTA client in subsys/mgmt/updatehub/updatehub.c contains an out-of-bounds / uninitialized-memory read in z_impl_updatehub_probe(). The probe response from the UpdateHub server is copied into a heap buffer (metadata) that is correctly...

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Affected
Refs
ReporterTitlePublishedViews
Family
attackerkb
ATTACKERKB
CVE-2026-11809
10 Aug 202620:36
attackerkb
cve
CVE
CVE-2026-11809
10 Aug 202620:36
cve
euvd
EUVD
EUVD-2026-55843
10 Aug 202620:36
euvd
nvd
NVD
CVE-2026-11809
10 Aug 202621:17
nvd
[
  {
    "vendor": "zephyrproject",
    "product": "zephyr",
    "collectionURL": "https://github.com/zephyrproject-rtos/zephyr",
    "packageName": "zephyr",
    "defaultStatus": "unaffected",
    "programFiles": [
      "subsys/mgmt/updatehub/updatehub.c"
    ],
    "versions": [
      {
        "version": "2.0.0",
        "status": "affected",
        "versionType": "semver",
        "lessThan": "4.4.2"
      }
    ]
  }
]

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10 Aug 2026 20:36Current
CVSS 3.13.7
4