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CVE-2026-10686 Missing hop-limit decrement on IPv6 forwarding path allows unbounded packet looping (DoS) in Zephyr routers

🗓️ 31 Jul 2026 15:49:10Reported by zephyrType 
cvelist
 cvelist
🔗 www.cve.org👁 4 Views

Zephyr IPv6 forwarding lacks hop-limit decrement, enabling DoS from looping packets in affected releases.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
cve
CVE
CVE-2026-10686
31 Jul 202615:49
cve
euvd
EUVD
EUVD-2026-51557
31 Jul 202615:49
euvd
nvd
NVD
CVE-2026-10686
31 Jul 202616:16
nvd
ptsecurity
Positive Technologies
PT-2026-66770
31 Jul 202600:00
ptsecurity
vulnrichment
Vulnrichment
CVE-2026-10686 Missing hop-limit decrement on IPv6 forwarding path allows unbounded packet looping (DoS) in Zephyr routers
31 Jul 202615:49
vulnrichment
[
  {
    "vendor": "zephyrproject",
    "product": "zephyr",
    "collectionURL": "https://github.com/zephyrproject-rtos/zephyr",
    "packageName": "zephyr",
    "defaultStatus": "unaffected",
    "programFiles": [
      "subsys/net/ip/ipv4.c",
      "subsys/net/ip/ipv6.c",
      "subsys/net/ip/route.c",
      "subsys/net/ip/route_ipv4.c",
      "subsys/net/ip/route_ipv6.c"
    ],
    "versions": [
      {
        "version": "1.8.0",
        "status": "affected",
        "lessThan": "4.5.0",
        "versionType": "semver"
      }
    ]
  }
]

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