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CVE-2026-12539

Docker Sandboxes (sbx) blocks ICMP egress with an authorizer applied only at network-creation time, and does not re-apply it to networks rebuilt from disk when the Docker daemon restarts, so a restart-surviving sandbox forwards ICMP to arbitrary hosts. A workload inside a sandbox, which the threat model treats as untrusted, can therefore defeat the documented ICMP egress block to perform network reconnaissance and exfiltrate data over an ICMP covert channel, regardless of the configured allowlis
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:6e9a8c2781122ad41e4e55cead750945d75068bcb4d8b3e41524bd57aebc54f7
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-665","description":"CWE-665: Improper Initialization","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f41fe6f7475eaa987e679f2a921b36ed60c905f81bddee791427559c18800e97 · sha256:9196db0c2940b1a8… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-923","description":"CWE-923: Improper Restriction of Communication Channel to Intended Endpoints","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f41fe6f7475eaa987e679f2a921b36ed60c905f81bddee791427559c18800e97 · sha256:9196db0c2940b1a8… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"cpes":["cpe:2.3:a:docker:sandboxes:*:*:*:*:*:*:*:*"],"defaultStatus":"unaffected","platforms":["MacOS","Linux","Windows"],"product":"Docker Sandboxes","vendor":"Docker","versions":[{"lessThan":"0.33.0","status":"affected","version":"0.14.0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:f41fe6f7475eaa987e679f2a921b36ed60c905f81bddee791427559c18800e97 · sha256:9196db0c2940b1a8… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"LOCAL","baseScore":5.1,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact"…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:f41fe6f7475eaa987e679f2a921b36ed60c905f81bddee791427559c18800e97 · sha256:9196db0c2940b1a8… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-665","description":"CWE-665: Improper Initialization","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f41fe6f7475eaa987e679f2a921b36ed60c905f81bddee791427559c18800e97 · sha256:9196db0c2940b1a8… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-923","description":"CWE-923: Improper Restriction of Communication Channel to Intended Endpoints","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:f41fe6f7475eaa987e679f2a921b36ed60c905f81bddee791427559c18800e97 · sha256:9196db0c2940b1a8… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"tags":["product"],"url":"https://docs.docker.com/ai/sandboxes/"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f41fe6f7475eaa987e679f2a921b36ed60c905f81bddee791427559c18800e97 · sha256:9196db0c2940b1a8… · /containers/cna/references/0
{"tags":["release-notes"],"url":"https://github.com/docker/sbx-releases/releases/tag/v0.33.0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:f41fe6f7475eaa987e679f2a921b36ed60c905f81bddee791427559c18800e97 · sha256:9196db0c2940b1a8… · /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.

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