{"schemaVersion":3,"id":"CVE-2026-101968","aliases":[],"status":"published","duplicateOf":null,"title":"Junos OS and Junos OS Evolved: EX Series, MX Series, ACX Series: An attacker causes rpd heap memory disclosure when Rosen-MVPN data-MDT is enabled","description":"An Integer Underflow (Wrap or Wraparound) vulnerability in the rpd process of Juniper Networks Junos OS on EX Series and MX Series, and Junos OS Evolved on ACX Series allows an unauthenticated adjacent attacker to cause heap memory disclosure and multicast join-state injection via a malformed Rosen-MVPN message.\n\nThis issue only affects platforms that support draft Rosen MVPN, such as the ACX Series, EX Series, and MX 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Underflow (Wrap or Wraparound)","description":"The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/191.html"}],"affected":[{"vendor":"juniper networks","product":"junos os","name":"Junos OS","label":"junos os","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 23.2R2-S7.7","noFixRecorded":false,"fixedIn":null},{"text":"≥ 23.4, < 23.4R2-S8.13","noFixRecorded":false,"fixedIn":null},{"text":"≥ 24.2, < 24.2R2-S5.5","noFixRecorded":false,"fixedIn":null},{"text":"≥ 24.4, < 24.4R2-S5","noFixRecorded":false,"fixedIn":null},{"text":"≥ 25.2, < 25.2R2-S2","noFixRecorded":false,"fixedIn":null},{"text":"≥ 25.4, < 25.4R1-S3","noFixRecorded":false,"fixedIn":null},{"text":"≥ 26.2, < 26.2R1-S2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 23.2R2-S7.7 | ≥ 23.4, < 23.4R2-S8.13 | ≥ 24.2, < 24.2R2-S5.5 | ≥ 24.4, < 24.4R2-S5 | ≥ 25.2, < 25.2R2-S2 | ≥ 25.4, < 25.4R1-S3 | ≥ 26.2, < 26.2R1-S2","eol":null,"hubHref":"/vendor/juniper_networks/junos_os"},{"vendor":"juniper networks","product":"junos os evolved","name":"Junos OS Evolved","label":"junos os evolved","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 23.2R2-S7.7-EVO","noFixRecorded":false,"fixedIn":null},{"text":"≥ 23.4, < 23.4R2-S8.11-EVO","noFixRecorded":false,"fixedIn":null},{"text":"≥ 24.2, < 24.2R2-S5.6-EVO","noFixRecorded":false,"fixedIn":null},{"text":"≥ 24.4, < 24.4R2-S5-EVO","noFixRecorded":false,"fixedIn":null},{"text":"≥ 25.2, < 25.2R2-S2-EVO","noFixRecorded":false,"fixedIn":null},{"text":"≥ 25.4, < 25.4R1-S3-EVO","noFixRecorded":false,"fixedIn":null},{"text":"≥ 26.2, < 26.2R1-S2-EVO","noFixRecorded":false,"fixedIn":null},{"text":"23.4X100","noFixRecorded":false,"fixedIn":null},{"text":"≥ 25.2X100, < 25.2X100-D35-EVO","noFixRecorded":false,"fixedIn":null},{"text":"≥ 25.4X300, < 25.4X300-D40-EVO","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 23.2R2-S7.7-EVO | ≥ 23.4, < 23.4R2-S8.11-EVO | ≥ 24.2, < 24.2R2-S5.6-EVO | ≥ 24.4, < 24.4R2-S5-EVO | ≥ 25.2, < 25.2R2-S2-EVO | ≥ 25.4, < 25.4R1-S3-EVO | ≥ 26.2, < 26.2R1-S2-EVO | 23.4X100 | ≥ 25.2X100, < 25.2X100-D35-EVO | ≥ 25.4X300, < 25.4X300-D40-EVO","eol":null,"hubHref":"/vendor/juniper_networks/junos_os_evolved"}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://supportportal.juniper.net/JSA112187","label":"supportportal.juniper.net/JSA112187","hostname":"supportportal.juniper.net","tags":["Vendor Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-10-14T16:43:07.660Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-16T15:31:48.596Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":22,"level":"low","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-22T17:09:46.481Z","stale":false,"partial":false}}