CVE-2026-59762 (GCVE-0-2026-59762)

Vulnerability from cvelistv5 – Published: 2026-07-15 14:33 – Updated: 2026-07-15 15:35
VLAI
Title
BIG-IP HTTP/2 vulnerability
Summary
When an HTTP/2 profile is configured on a virtual server, undisclosed requests can cause an increase in memory resource utilization.   Impact: 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. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
8.7 (High)
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
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-15 15:34 UTC
CWE
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
URL Tags
https://my.f5.com/manage/s/article/K000162231 vendor-advisorypatch
Impacted products
Vendor Product Version
F5 BIG-IP Affected: 21.1.0 , < 21.1.0.1 (custom)
Affected: 21.0.0 , < 21.0.0.3 (custom)
Affected: 17.5.0 , < 17.5.1.8 (custom)
Affected: 17.1.0 , < 17.1.3.4 (custom)
Create a notification for this product.
F5 BIG-IP Next for Kubernetes Affected: 2.3.0 , < 2.3.2 (custom)
Affected: 2.0.0 , < 2.2.3 (custom)
Create a notification for this product.
F5 BIG-IP Next SPK Affected: 1.9.0 , < * (custom)
Affected: 1.7.0 , < 1.7.18 (custom)
Create a notification for this product.
F5 BIG-IP Next CNF Affected: 2.3.0 , < 2.3.2 (custom)
Affected: 2.0.0 , < 2.2.3 (custom)
Affected: 1.1.0 , < 1.4.3 (custom)
Create a notification for this product.
Date Public
2026-07-15 14:00
Credits
F5 acknowledges the Okta Red Team of Okta for bringing this issue to our attention and following the highest standards of coordinated disclosure.
Show details on NVD website
To clipboard 

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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


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