CVE Explorer
CVE-2026-10686
Zephyr's IPv6 forwarding path re-sent routed unicast packets without ever decrementing the IPv6 hop limit. Both routing branches of ipv6_route_packet() (subsys/net/ip) were affected: the explicit-route path (net_route_packet()) and the on-link cross-interface path (net_route_packet_if()). Each set the packet forwarding flag and called net_send_data() with the hop limit untouched and no expiry check.
Per RFC 8200 the hop-limit decrement is the mechanism that bounds packet lifetime and terminates
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"collectionURL":"https://github.com/zephyrproject-rtos/zephyr","defaultStatus":"unaffected","packageName":"zephyr","product":"zephyr","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"],"vendor":"zephyrproject","versions":[{"lessThan":"4.5.0","status":"affected","version":"1.8.0","versionType":"semver"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:4d0ec0a2df29235687221c8d3531d7e4e2bc2a584ee4fcf32fb2b4fc9fa3f2fb · sha256:0b3f3e66c4c2babe… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"baseScore":5.8,"baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:4d0ec0a2df29235687221c8d3531d7e4e2bc2a584ee4fcf32fb2b4fc9fa3f2fb · sha256:0b3f3e66c4c2babe… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-835","description":"dos","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:4d0ec0a2df29235687221c8d3531d7e4e2bc2a584ee4fcf32fb2b4fc9fa3f2fb · sha256:0b3f3e66c4c2babe… · /containers/cna/problemTypes/0/descriptions/0
Source references
2 source assertions{"name":"Fix commit","tags":["patch"],"url":"https://github.com/zephyrproject-rtos/zephyr/commit/7d8f1afa7345975b58405d6fba18bb8c3f7cb12a"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:4d0ec0a2df29235687221c8d3531d7e4e2bc2a584ee4fcf32fb2b4fc9fa3f2fb · sha256:0b3f3e66c4c2babe… · /containers/cna/references/0
{"name":"GHSA-4cg6-6jc4-2r6h","url":"https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-4cg6-6jc4-2r6h"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:4d0ec0a2df29235687221c8d3531d7e4e2bc2a584ee4fcf32fb2b4fc9fa3f2fb · sha256:0b3f3e66c4c2babe… · /containers/cna/references/1
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.