Baitaphish
Security intelligence
SearchLatest briefing
CVE Explorer

CVE-2026-21909

A Missing Release of Memory after Effective Lifetime vulnerability in the routing protocol daemon (rpd) Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated attacker controlling an adjacent IS-IS neighbor to send a specific update packet causing a memory leak. Continued receipt and processing of these packets will exhaust all available memory, crashing rpd and creating a Denial of Service (DoS) condition. Memory usage can be monitored through the use of the 'show task memory
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:a68b4fb3045d47cd5347d2461901d995103daae79702035f397e463bae6d84d4
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"defaultStatus":"unaffected","product":"Junos OS Evolved","vendor":"Juniper Networks","versions":[{"lessThan":"23.2R2-EVO","status":"affected","version":"23.2","versionType":"semver"},{"lessThan":"23.4R1-S2-EVO, 23.4R2-EVO","status":"affected","version":"23.4","versionType":"semver"},{"lessThan":"24.1R2-EVO","status":"affected","version":"24.1","versionType":"semver"},{"lessThan":"23.2R1-EVO","status":"unaffected","version":"0","versionType":"semver"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:09843e0956316becd57ec206162bbf3d524a1667008e7613dcd03287fbd61e4c · sha256:2175f1faaed9d83b… · /containers/cna/affected/1

{"defaultStatus":"unaffected","product":"Junos OS","vendor":"Juniper Networks","versions":[{"lessThan":"23.2R2","status":"affected","version":"23.2","versionType":"semver"},{"lessThan":"23.4R1-S2, 23.4R2","status":"affected","version":"23.4","versionType":"semver"},{"lessThan":"24.1R2","status":"affected","version":"24.1","versionType":"semver"},{"lessThan":"23.2R1","status":"unaffected","version":"0","versionType":"semver"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:09843e0956316becd57ec206162bbf3d524a1667008e7613dcd03287fbd61e4c · sha256:2175f1faaed9d83b… · /containers/cna/affected/0
cvss · 2 assertions

{"metric":{"attackComplexity":"LOW","attackVector":"ADJACENT_NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:09843e0956316becd57ec206162bbf3d524a1667008e7613dcd03287fbd61e4c · sha256:2175f1faaed9d83b… · /containers/cna/metrics/0/cvssV3_1

{"metric":{"Automatable":"YES","Recovery":"AUTOMATIC","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"ADJACENT","baseScore":7.1,"baseSeverity":"HIGH","privilegesRequired":"NONE","providerUrgency":"GREEN","subAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"CONCENTRATED","vectorString":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:A/V:C/RE:M/U:Green","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityI…

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:09843e0956316becd57ec206162bbf3d524a1667008e7613dcd03287fbd61e4c · sha256:2175f1faaed9d83b… · /containers/cna/metrics/1/cvssV4_0

Affected products and versions

2 source assertions
{"defaultStatus":"unaffected","product":"Junos OS Evolved","vendor":"Juniper Networks","versions":[{"lessThan":"23.2R2-EVO","status":"affected","version":"23.2","versionType":"semver"},{"lessThan":"23.4R1-S2-EVO, 23.4R2-EVO","status":"affected","version":"23.4","versionType":"semver"},{"lessThan":"24.1R2-EVO","status":"affected","version":"24.1","versionType":"semver"},{"lessThan":"23.2R1-EVO","status":"unaffected","version":"0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:09843e0956316becd57ec206162bbf3d524a1667008e7613dcd03287fbd61e4c · sha256:2175f1faaed9d83b… · /containers/cna/affected/1
{"defaultStatus":"unaffected","product":"Junos OS","vendor":"Juniper Networks","versions":[{"lessThan":"23.2R2","status":"affected","version":"23.2","versionType":"semver"},{"lessThan":"23.4R1-S2, 23.4R2","status":"affected","version":"23.4","versionType":"semver"},{"lessThan":"24.1R2","status":"affected","version":"24.1","versionType":"semver"},{"lessThan":"23.2R1","status":"unaffected","version":"0","versionType":"semver"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:09843e0956316becd57ec206162bbf3d524a1667008e7613dcd03287fbd61e4c · sha256:2175f1faaed9d83b… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackVector":"ADJACENT_NETWORK","availabilityImpact":"HIGH","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:09843e0956316becd57ec206162bbf3d524a1667008e7613dcd03287fbd61e4c · sha256:2175f1faaed9d83b… · /containers/cna/metrics/0/cvssV3_1
{"metric":{"Automatable":"YES","Recovery":"AUTOMATIC","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"ADJACENT","baseScore":7.1,"baseSeverity":"HIGH","privilegesRequired":"NONE","providerUrgency":"GREEN","subAvailabilityImpact":"LOW","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"CONCENTRATED","vectorString":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:A/V:C/RE:M/U:Green","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityI…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:09843e0956316becd57ec206162bbf3d524a1667008e7613dcd03287fbd61e4c · sha256:2175f1faaed9d83b… · /containers/cna/metrics/1/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-401","description":"CWE-401 Missing Release of Memory after Effective Lifetime","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:09843e0956316becd57ec206162bbf3d524a1667008e7613dcd03287fbd61e4c · sha256:2175f1faaed9d83b… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"tags":["vendor-advisory"],"url":"https://kb.juniper.net/JSA106008"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:09843e0956316becd57ec206162bbf3d524a1667008e7613dcd03287fbd61e4c · sha256:2175f1faaed9d83b… · /containers/cna/references/1
{"tags":["vendor-advisory"],"url":"https://supportportal.juniper.net/JSA106008"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:09843e0956316becd57ec206162bbf3d524a1667008e7613dcd03287fbd61e4c · sha256:2175f1faaed9d83b… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

← Back to CVE Explorer