{"id":"EUVD-2026-89203","revision":"42c23f11c90b4d00a5b24f5bc7a038ab","records":[{"revision":"42c23f11c90b4d00a5b24f5bc7a038ab","observedAt":"2026-10-30T01:49:21.183+00:00","statement":{"source":"euvd","id":"EUVD-2026-89203","aliases":["CVE-2026-102820","GHSA-g4mp-vgx3-xrvm"],"title":"pageant provides a [PageantStream] type that implements [AsyncRead] and [AsyncWrite] traits and can be used to talk to a running Pageant instance. Prior to pageant 0.2.3, the Windows pageant crate's pageant/src/wmmessage.rs MemoryMap::read …","description":"pageant provides a [PageantStream] type that implements [AsyncRead] and [AsyncWrite] traits and can be used to talk to a running Pageant instance. Prior to pageant 0.2.3, the Windows pageant crate's pageant/src/wmmessage.rs MemoryMap::read function trusts a peer-controlled u32 response length supplied through the 8192-byte Pageant shared-memory mapping reached by AgentClient::connect_pageant. A local process that impersonates the Pageant window can make query_pageant_direct allocate up to approximately 4 GiB and copy beyond the mapped view, reliably crashing a russh client and conditionally exposing adjacent committed memory. This issue is fixed in pageant 0.2.3.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":6.2,"severity":null}],"references":["https://github.com/Eugeny/russh/security/advisories/GHSA-g4mp-vgx3-xrvm","https://github.com/Eugeny/russh/commit/5d566989ebabfdebfe6b33243d31765a0812260b","https://github.com/Eugeny/russh/releases/tag/v0.63.2"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-89203","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Sep 29, 2026, 6:18:43 PM","dateUpdated":"Sep 30, 2026, 8:11:08 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-89203","identifiers":["EUVD-2026-89203","CVE-2026-102820","GHSA-g4mp-vgx3-xrvm"]},"retained":false,"historicalAffected":[]}],"coverage":[]}