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CVE-2026-42920

When a Client SSL profile is configured with Allow Dynamic Record Sizing on a UDP virtual server, undisclosed traffic can cause the Traffic Management Microkernel (TMM) to terminate.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:9153fc7d3856b97b6b62b4c7f37b16b924a34702f641f48cc10c9b8dad8989f2
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cvss · 2 assertions

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/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:cc06a11f7dc106562e9356cee411a124f4c77fd4f1e27c02460f1df8f893cca1 · sha256:eb5f99effdcc0464… · /containers/cna/metrics/0/cvssV3_1

{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.7,"baseSeverity":"HIGH","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NON…

  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:cc06a11f7dc106562e9356cee411a124f4c77fd4f1e27c02460f1df8f893cca1 · sha256:eb5f99effdcc0464… · /containers/cna/metrics/1/cvssV4_0

Affected products and versions

1 source assertion
{"defaultStatus":"unknown","modules":["All Modules"],"product":"BIG-IP","vendor":"F5","versions":[{"lessThan":"*","status":"unaffected","version":"21.1.0","versionType":"custom"},{"lessThan":"21.0.0.1","status":"affected","version":"21.0.0","versionType":"custom"},{"lessThan":"17.5.1.4","status":"affected","version":"17.5.0","versionType":"custom"},{"lessThan":"17.1.3.1","status":"affected","version":"17.1.0","versionType":"custom"},{"lessThan":"*","status":"affected","version":"16.1.0","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:cc06a11f7dc106562e9356cee411a124f4c77fd4f1e27c02460f1df8f893cca1 · sha256:eb5f99effdcc0464… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/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:cc06a11f7dc106562e9356cee411a124f4c77fd4f1e27c02460f1df8f893cca1 · sha256:eb5f99effdcc0464… · /containers/cna/metrics/0/cvssV3_1
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":8.7,"baseSeverity":"HIGH","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NON…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:cc06a11f7dc106562e9356cee411a124f4c77fd4f1e27c02460f1df8f893cca1 · sha256:eb5f99effdcc0464… · /containers/cna/metrics/1/cvssV4_0

CWE assertions

1 source assertion
{"cweId":"CWE-835","description":"CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:cc06a11f7dc106562e9356cee411a124f4c77fd4f1e27c02460f1df8f893cca1 · sha256:eb5f99effdcc0464… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"tags":["vendor-advisory","patch"],"url":"https://my.f5.com/manage/s/article/K000160901"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:cc06a11f7dc106562e9356cee411a124f4c77fd4f1e27c02460f1df8f893cca1 · sha256:eb5f99effdcc0464… · /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.

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