{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-59762","assignerOrgId":"9dacffd4-cb11-413f-8451-fbbfd4ddc0ab","state":"PUBLISHED","assignerShortName":"f5","dateReserved":"2026-07-08T15:49:43.031Z","datePublished":"2026-07-15T14:33:44.468Z","dateUpdated":"2026-07-15T15:35:16.895Z"},"containers":{"cna":{"affected":[{"defaultStatus":"unknown","modules":["All Modules"],"product":"BIG-IP","vendor":"F5","versions":[{"lessThan":"21.1.0.1","status":"affected","version":"21.1.0","versionType":"custom"},{"lessThan":"21.0.0.3","status":"affected","version":"21.0.0","versionType":"custom"},{"lessThan":"17.5.1.8","status":"affected","version":"17.5.0","versionType":"custom"},{"lessThan":"17.1.3.4","status":"affected","version":"17.1.0","versionType":"custom"}]},{"defaultStatus":"unknown","modules":["TMM"],"product":"BIG-IP Next for Kubernetes","vendor":"F5","versions":[{"lessThan":"2.3.2","status":"affected","version":"2.3.0","versionType":"custom"},{"lessThan":"2.2.3","status":"affected","version":"2.0.0","versionType":"custom"}]},{"defaultStatus":"unknown","modules":["TMM"],"product":"BIG-IP Next SPK","vendor":"F5","versions":[{"lessThan":"*","status":"affected","version":"1.9.0","versionType":"custom"},{"lessThan":"1.7.18","status":"affected","version":"1.7.0","versionType":"custom"}]},{"defaultStatus":"unknown","modules":["TMM"],"product":"BIG-IP Next CNF","vendor":"F5","versions":[{"lessThan":"2.3.2","status":"affected","version":"2.3.0","versionType":"custom"},{"lessThan":"2.2.3","status":"affected","version":"2.0.0","versionType":"custom"},{"lessThan":"1.4.3","status":"affected","version":"1.1.0","versionType":"custom"}]}],"credits":[{"lang":"en","type":"reporter","value":"F5 acknowledges the Okta Red Team of Okta for bringing this issue to our attention and following the highest standards of coordinated disclosure."}],"datePublic":"2026-07-15T14:00:00.000Z","descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>\n\n<span style=\"background-color: rgb(255, 255, 255);\">When an HTTP/2 profile is configured on a virtual server, undisclosed requests can cause an increase in memory resource utilization.</span>&nbsp;&nbsp;<br></p>\n\n\n\n\n\n\n<span style=\"background-color: rgb(255, 255, 255);\">Impact:<br>System performance can degrade until the TMM process is either forced to restart or is manually restarted. This vulnerability allows a remote, unauthenticated attacker to cause a degradation of service that can lead to a denial-of-service (DoS) on the BIG-IP system. There is no control plane exposure; this is a data plane issue only.<br></span>\n\n<br>\n\n<span style=\"background-color: rgb(255, 255, 255);\">Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.</span>\n\n<br>"}],"value":"When an HTTP/2 profile is configured on a virtual server, undisclosed requests can cause an increase in memory resource utilization.  \n\n\n\n\n\n\n\n\n\nImpact:\nSystem performance can degrade until the TMM process is either forced to restart or is manually restarted. This vulnerability allows a remote, unauthenticated attacker to cause a degradation of service that can lead to a denial-of-service (DoS) on the BIG-IP system. There is no control plane exposure; this is a data plane issue only.\n\n\n\n\n\nNote: Software versions which have reached End of Technical Support (EoTS) are not evaluated."}],"metrics":[{"cvssV3_1":{"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"},"format":"CVSS","scenarios":[{"lang":"en","value":"Standard Deployment"}]},{"cvssV4_0":{"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":"NONE","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"Standard Deployment"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-770","description":"CWE-770: Allocation of Resources Without Limits or Throttling","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"9dacffd4-cb11-413f-8451-fbbfd4ddc0ab","shortName":"f5","dateUpdated":"2026-07-15T14:33:44.468Z"},"references":[{"tags":["vendor-advisory","patch"],"url":"https://my.f5.com/manage/s/article/K000162231"}],"source":{"discovery":"EXTERNAL"},"title":"BIG-IP HTTP/2 vulnerability","x_generator":{"engine":"F5 SIRTBot v1.0"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-15T15:34:45.499391Z","id":"CVE-2026-59762","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-07-15T15:35:16.895Z"}}]}}