Baitaphish
Security intelligence
SearchLatest briefing
CVE Explorer

CVE-2026-54777

CoreWCF is a port of the service side of Windows Communication Foundation (WCF) to .NET Core. Prior to 1.8.1 and 1.9.1, CoreWCF NetNamedPipe transport accepts attachment to a pre-existing named pipe instance, allowing local interception of NetNamedPipe traffic when an attacker races NamedPipeListener startup between shared memory GUID publication and service named pipe creation. This issue is fixed in versions 1.8.1 and 1.9.1.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:6cc3f77a100198c2ba61ca96066f428734aa1d095283892e08d7f056c5c52099
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:dba76d708d8653492f3893298be0eda47a027c0086847ec29a851fa4fb20d1f7 · sha256:361b6691b695bedd… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-367","description":"CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:dba76d708d8653492f3893298be0eda47a027c0086847ec29a851fa4fb20d1f7 · sha256:361b6691b695bedd… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"CoreWCF","vendor":"CoreWCF","versions":[{"status":"affected","version":">= 1.9.0, < 1.9.1"},{"status":"affected","version":"< 1.8.1"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:dba76d708d8653492f3893298be0eda47a027c0086847ec29a851fa4fb20d1f7 · sha256:361b6691b695bedd… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackVector":"LOCAL","availabilityImpact":"LOW","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:dba76d708d8653492f3893298be0eda47a027c0086847ec29a851fa4fb20d1f7 · sha256:361b6691b695bedd… · /containers/cna/metrics/0/cvssV3_1

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:dba76d708d8653492f3893298be0eda47a027c0086847ec29a851fa4fb20d1f7 · sha256:361b6691b695bedd… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-367","description":"CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:dba76d708d8653492f3893298be0eda47a027c0086847ec29a851fa4fb20d1f7 · sha256:361b6691b695bedd… · /containers/cna/problemTypes/0/descriptions/0

Source references

5 source assertions
{"name":"https://github.com/CoreWCF/CoreWCF/commit/8ed9c780c7c6fb22fa215c5771dee0c1e49596b7","tags":["x_refsource_MISC"],"url":"https://github.com/CoreWCF/CoreWCF/commit/8ed9c780c7c6fb22fa215c5771dee0c1e49596b7"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:dba76d708d8653492f3893298be0eda47a027c0086847ec29a851fa4fb20d1f7 · sha256:361b6691b695bedd… · /containers/cna/references/1
{"name":"https://github.com/CoreWCF/CoreWCF/commit/e7d225394fd429900dcbc445dcdd53b94e964077","tags":["x_refsource_MISC"],"url":"https://github.com/CoreWCF/CoreWCF/commit/e7d225394fd429900dcbc445dcdd53b94e964077"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:dba76d708d8653492f3893298be0eda47a027c0086847ec29a851fa4fb20d1f7 · sha256:361b6691b695bedd… · /containers/cna/references/2
{"name":"https://github.com/CoreWCF/CoreWCF/releases/tag/v1.8.1","tags":["x_refsource_MISC"],"url":"https://github.com/CoreWCF/CoreWCF/releases/tag/v1.8.1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:dba76d708d8653492f3893298be0eda47a027c0086847ec29a851fa4fb20d1f7 · sha256:361b6691b695bedd… · /containers/cna/references/3
{"name":"https://github.com/CoreWCF/CoreWCF/releases/tag/v1.9.1","tags":["x_refsource_MISC"],"url":"https://github.com/CoreWCF/CoreWCF/releases/tag/v1.9.1"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:dba76d708d8653492f3893298be0eda47a027c0086847ec29a851fa4fb20d1f7 · sha256:361b6691b695bedd… · /containers/cna/references/4
{"name":"https://github.com/CoreWCF/CoreWCF/security/advisories/GHSA-6jj2-4q5c-x8g6","tags":["x_refsource_CONFIRM"],"url":"https://github.com/CoreWCF/CoreWCF/security/advisories/GHSA-6jj2-4q5c-x8g6"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:dba76d708d8653492f3893298be0eda47a027c0086847ec29a851fa4fb20d1f7 · sha256:361b6691b695bedd… · /containers/cna/references/0

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.

← Back to CVE Explorer