{"id":"CVE-2026-107785","revision":null,"records":[{"revision":"9f973c641d454842870a9099ea4586b5","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-107785","aliases":[],"title":"Crux Agent silently fails SKA preshared key rotation when SHA-512 peering is negotiated","description":"Crux Agent from 1.9.0 before 2.0.3 uses the full SKA bilocation key as the WireGuard preshared key. When a peering session negotiates use of SHA-512, the key produced is 64 bytes instead of the 32 bytes WireGuard requires. The agent does not validate this size; instead it attempts to use the `wg set` command to update the live tunnel, and write the invalid key to the WireGuard configuration file. The update fails, so the live tunnel keeps using its previous preshared key until the tunnel is shut down. The tunnel will fail to start when restarted.\n\n\n\nFor a peer which has never successfully negotiated a 32-byte bilocation key in a Crux C2 organization which has the \"Enforce SKA Use\" setting turned off, no preshared key will be set for the tunnel. Therefore, an attacker who is able to intercept and store the peer's traffic, and has access (or will have access) to a cryptographically relevant quantum computer, will be able to decrypt the tunnel.","state":0,"publishedAt":"2026-10-09T13:15:57.779+00:00","modifiedAt":"2026-10-09T16:46:40.88+00:00","affected":[{"ecosystem":"Vendor product","name":"Crux Agent","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Sirius Computer, Inc.\",\n                    \"product\": \"Crux Agent\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"1.9.0\",\n                            \"lessThan\": \"2.0.3\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:U/S:N/AU:Y/R:A/V:C/RE:L/U:Amber","score":6.3,"severity":"MEDIUM"}],"references":["https://sirius.computer/security-disclosure-policy/"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-107785","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-107785","identifiers":["CVE-2026-107785"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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Not a global EUVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-efc28183efe04e138ba7d91d47b051d0","complete":true,"records":13691,"lastAttemptAt":"2026-11-10T13:22:39.8838724+00:00","lastSuccessAt":"2026-11-10T13:22:39.879+00:00","error":null,"lastVerifiedAt":"2026-11-10T13:22:39.879+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13744,"expectedIdentifiers":13744,"failedIdentifiers":0},{"source":"first-epss:nuget","scope":"FIRST EPSS for explicit CVE aliases in the collected public NuGet archive. Not a global EPSS backfill.","generation":"2026-11-10T13:22:12.0568802+00:00","complete":true,"records":1096,"lastAttemptAt":"2026-11-10T13:22:12.0568802+00:00","lastSuccessAt":"2026-11-10T13:22:12.2192335+00:00","error":null,"lastVerifiedAt":"2026-11-10T13:22:12.219234+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"nvd","scope":"Rolling NVD lookups of CVE aliases in current public OSV archives; 500 identifiers per refresh, rechecked after 48 hours. Not a global NVD catalog. Successful not-found lookups count as checked; they do not imply withdrawal or safety. No reader inventory is sent.","generation":"enrichment-fce56865ab584da18fe65ffedaec05f5","complete":false,"records":13697,"lastAttemptAt":"2026-11-10T13:22:38.4294414+00:00","lastSuccessAt":"2026-11-10T13:22:38.423+00:00","error":"100 identifier lookups failed; latest failures include request timeout. Other identifiers were checked independently.","lastVerifiedAt":"2026-11-10T13:22:38.423+00:00","snapshotPublishedAt":null,"importing":false,"stagedRecords":0,"checkedIdentifiers":13642,"expectedIdentifiers":13744,"failedIdentifiers":100},{"source":"osv:Go","scope":"Complete OSV Go ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"go-cdffb4589856378aa42e8d1bd4a6c74e27a180d8160bf764c44715ef760f0a62","complete":true,"records":9932,"lastAttemptAt":"2026-11-10T13:21:48.828686+00:00","lastSuccessAt":"2026-11-10T00:04:19.8260565+00:00","error":null,"lastVerifiedAt":"2026-11-10T13:21:48.828686+00:00","snapshotPublishedAt":"2026-11-09T23:48:01+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:NuGet","scope":"Complete OSV NuGet ecosystem archive, including GitHub Advisory Database records; NuGet version matching only","generation":"nuget-26503967ae4379db8f374089589d6e03fb15bd31f820c9e992aaf93840c2236c","complete":true,"records":1971,"lastAttemptAt":"2026-11-10T13:21:48.0645605+00:00","lastSuccessAt":"2026-11-09T21:02:20.472473+00:00","error":null,"lastVerifiedAt":"2026-11-10T13:21:48.0645605+00:00","snapshotPublishedAt":"2026-11-09T20:18:18+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:crates.io","scope":"Complete OSV crates.io ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"crates.io-90debfccd5f97608c3e96ebc37b3b03e91c00adb00e581b0f0dcaea693c0d935","complete":true,"records":3074,"lastAttemptAt":"2026-11-10T13:22:12.0183897+00:00","lastSuccessAt":"2026-11-10T13:22:11.8765745+00:00","error":null,"lastVerifiedAt":"2026-11-10T13:22:12.0183897+00:00","snapshotPublishedAt":"2026-11-10T13:03:15+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null},{"source":"osv:npm","scope":"Complete OSV npm ecosystem archive, including withdrawn and malicious-package source records; statement counts are not unique CVE counts","generation":"npm-86f40cdda9ca36627f818d0cc8237a8a8c7c22cb687d6747a4ea12bded69e17e","complete":true,"records":231599,"lastAttemptAt":"2026-11-10T13:21:48.3696491+00:00","lastSuccessAt":"2026-11-10T11:25:00.8551311+00:00","error":null,"lastVerifiedAt":"2026-11-10T13:21:48.3696491+00:00","snapshotPublishedAt":"2026-11-10T11:03:07+00:00","importing":false,"stagedRecords":0,"checkedIdentifiers":null,"expectedIdentifiers":null,"failedIdentifiers":null}]}