{"id":"CVE-2026-123557","aliases":[],"cve":{"records":[{"id":"CVE-2026-123557","source":"VulnCheck","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-11-06T00:50:45.483Z","published":"2026-11-08T01:37:58.967Z","modified":"2026-11-10T17:58:43.746Z"}],"publishers":[{"name":"VulnCheck","role":"CNA","organizationId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","modified":"2026-11-08T01:37:58.967Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-11-10T17:58:43.746Z"}],"references":[{"url":"https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-6v36-c42v-v98p","tags":["vendor-advisory"],"source":"VulnCheck"},{"url":"https://www.vulncheck.com/advisories/zebra-zebrad-before-7.0.0-reachable-assertion-dos-via-peer-disconnection","tags":["third-party-advisory"],"source":"VulnCheck"}],"weaknesses":[{"id":"CWE-617","description":"Reachable Assertion","source":"VulnCheck"}],"applicability":[{"source":"VulnCheck","statements":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:zfnd:zebra:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.0"}]}]}]}],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-11-10T15:41:54.130729Z","decisions":[{"name":"Exploitation","value":"none"},{"name":"Automatable","value":"no"},{"name":"Technical Impact","value":"partial"}]}]},"title":"Zebra zebrad before 7.0.0 Reachable Assertion DoS via Peer Disconnection","titleSource":"VulnCheck","descriptionSource":"VulnCheck","description":"ZcashFoundation Zebra zebrad before 7.0.0 contains a reachable assertion race condition that allows unauthenticated remote peers to abort the node by triggering disconnection during a blocked outbound send. Malicious peers can return empty FindBlocks or FindHeaders replies and stop reading their socket, dropping an unresolved MustUseClientResponseSender and terminating syncing nodes.","score":8.2,"severity":"high","published":"2026-11-08T01:37:58.967Z","modified":"2026-11-10T17:58:43.746Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"ZcashFoundation","name":"zebra","platforms":[],"versions":[{"version":"0","status":"affected","lessThan":"7.0.0","versionType":"semver"},{"version":"7.0.0","status":"unaffected","versionType":"semver"}],"defaultStatus":"unaffected","packageURL":"pkg:cargo/zebrad","packageIdentity":{"ecosystem":"crates.io","name":"zebrad"},"cpes":[],"source":"VulnCheck","url":"https://www.cve.org/CVERecord?id=CVE-2026-123557"}],"remediation":[],"references":["https://github.com/ZcashFoundation/zebra/security/advisories/GHSA-6v36-c42v-v98p","https://www.vulncheck.com/advisories/zebra-zebrad-before-7.0.0-reachable-assertion-dos-via-peer-disconnection"],"sources":[{"name":"CVE","id":"CVE-2026-123557","modified":"2026-11-10T17:58:43.746Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-123557"}],"assessments":[{"source":"VulnCheck","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","score":8.2},{"source":"VulnCheck","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","score":5.9}],"sourceAffected":[],"observedAt":"2026-11-10T18:16:26.132Z","kev":{"status":"not-listed","checkedAt":"2026-11-15T01:45:32.170Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-11-08T03:05:37.387Z","attemptedAt":"2026-11-08T03:05:37.387Z"},{"source":"GHSA","status":"no-result","checkedAt":"2026-11-08T03:05:31.952Z","attemptedAt":"2026-11-08T03:05:31.952Z"},{"source":"EUVD","status":"available","checkedAt":"2026-11-08T03:05:32.625Z","attemptedAt":"2026-11-08T03:05:32.625Z"},{"source":"EPSS","status":"no-result","checkedAt":"2026-11-08T03:05:32.049Z","attemptedAt":"2026-11-08T03:05:32.049Z"}],"evidence":[{"source":"ENISA EUVD","id":"EUVD-2026-119442","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-119442","modified":"Nov 8, 2026, 1:37:58 AM","score":8.2,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","checkedAt":"2026-11-08T03:05:32.625Z"},{"source":"NVD","id":"CVE-2026-123557","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-123557","modified":"2026-11-08T02:16:47.813","score":8.2,"vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","checkedAt":"2026-11-08T03:05:37.387Z"},{"source":"NVD","id":"CVE-2026-123557","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-123557","modified":"2026-11-08T02:16:47.813","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","checkedAt":"2026-11-08T03:05:37.387Z"}],"aiSummary":{"text":"Zebra zebrad before 7.0.0 has a reachable assertion vulnerability that allows unauthenticated remote peers to abort the node via disconnection during a blocked outbound send. Malicious peers can trigger this by returning empty replies and stopping socket reading. This can terminate syncing nodes.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-11-08T02:16:38.737Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-123557"}]}}