{"attribution":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","cve":{"id":"CVE-2026-70462","sourceIdentifier":"disclosure@vulncheck.com","published":"2026-08-13T15:20:00.267","lastModified":"2026-11-03T21:39:01.497","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"rsync 3.1.0 before 3.5.0 contains a signed integer overflow vulnerability in the I/O timeout implementation that allows attackers to permanently disable connection timeouts by injecting MSG_IO_TIMEOUT messages carrying non-positive (zero or negative) values. Attackers can craft malicious MSG_IO_TIMEOUT messages that cause the timeout variable to wrap to a non-positive value, preventing the timeout check from firing and enabling idle or stalled connections to hold daemon slots indefinitely, leading to resource exhaustion."},{"lang":"es","value":"rsync 3.1.0 anterior a 3.5.0 contiene una vulnerabilidad de desbordamiento de entero con signo en la implementación del tiempo de espera de E/S que permite a los atacantes deshabilitar permanentemente los tiempos de espera de conexión inyectando mensajes MSG_IO_TIMEOUT que transportan valores no positivos (cero o negativos). Los atacantes pueden crear mensajes MSG_IO_TIMEOUT maliciosos que hacen que la variable de tiempo de espera se ajuste a un valor no positivo, impidiendo que se active la comprobación del tiempo de espera y permitiendo que las conexiones inactivas o estancadas mantengan ranuras de demonio indefinidamente, lo que lleva al agotamiento de recursos."}],"affected":[{"source":"disclosure@vulncheck.com","affectedData":[{"vendor":"RsyncProject","product":"rsync","defaultStatus":"unaffected","repo":"https://github.com/RsyncProject/rsync","packageURL":"pkg:github/RsyncProject/rsync","versions":[{"version":"3.1.0","lessThanOrEqual":"3.4.4","versionType":"semver","status":"affected"},{"version":"3.5.0","versionType":"semver","status":"unaffected"}]}]}],"metrics":{"cvssMetricV40":[{"source":"disclosure@vulncheck.com","type":"Secondary","cvssData":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/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","baseScore":7.1,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"PASSIVE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"cvssMetricV31":[{"source":"disclosure@vulncheck.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":2.8,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-08-13T15:35:36.532126Z","id":"CVE-2026-70462","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"disclosure@vulncheck.com","type":"Secondary","description":[{"lang":"en","value":"CWE-190"},{"lang":"en","value":"CWE-835"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:samba:rsync:*:*:*:*:*:*:*:*","versionStartIncluding":"3.1.0","versionEndExcluding":"3.5.0","matchCriteriaId":"BE9C809C-EB06-4A8F-BE1B-D50F2CF0B0B2"}]}]}],"references":[{"url":"https://github.com/RsyncProject/rsync/releases/tag/v3.5.0","source":"disclosure@vulncheck.com","tags":["Release Notes"]},{"url":"https://github.com/RsyncProject/rsync/security/advisories/GHSA-j9wh-5jmp-2m64","source":"disclosure@vulncheck.com","tags":["Vendor Advisory"]},{"url":"https://www.vulncheck.com/advisories/rsync-signed-integer-overflow-via-msg-io-timeout","source":"disclosure@vulncheck.com","tags":["Third Party Advisory"]}]}}