CVE-2025-8671

CVE-2025-8671

State
Published
Severity
7.5 High
Published
Aug 13, 2025
Updated
Nov 4, 2025
Reserved
Aug 6, 2025

Read the record on cve.org

Description

A mismatch caused by client-triggered server-sent stream resets between HTTP/2 specifications and the internal architectures of some HTTP/2 implementations may result in excessive server resource consumption leading to denial-of-service (DoS). By opening streams and then rapidly triggering the server to reset them—using malformed frames or flow control errors—an attacker can exploit incorrect stream accounting. Streams reset by the server are considered closed at the protocol level, even though backend processing continues. This allows a client to cause the server to handle an unbounded number of concurrent streams on a single connection. This CVE will be updated as affected product details are released.

Scores

CVSSScoreVectorSource
3.17.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCISA-ADP

Weaknesses

  • CWE-404 Improper Resource Shutdown or Release

Affected Products

ProductVersions
Enterprise Module for Development ToolsSUSE Linux
  • 15 SP2 to before 15-SP5Affected
Enterprise High Performance Computing (HPC)SUSE Linux
  • 15 to before 15 SP5Affected
Varnish EnterpriseVarnish Software
  • 6.0.x through 6.0.14r4Affected
Varnish CacheVarnish Software
  • 6.0LTS through 6.014Affected
Varnish CacheVarnish Software
  • 5.x through 7.71Affected
H20Fastly
  • 579ecfaAffected
LinuxWind River
  • LTS22 through TLS25Affected
Enterprise DesktopSUSE Linux
  • 15 SP6 to before 15 SP7Affected
Enterprise High Performance ComputingSUSE Linux
  • 15 SP3 to before 15 SP7Affected
Enterprise Module for Dev ToolsSUSE Linux
  • 15 SP3 to before 15 SP7Affected
Enterprise Module for Package HubSUSE Linux
  • 15 SP5 to before 15 SP7Affected
Enterprise ServerSUSE Linux
  • 12 SP5 to before 15 SP7Affected
Enterprise Server for SAP ApplicationsSUSE Linux
  • 15 SP6 to before 15 SP7Affected
SUSE Manager ServerSUSE Linux
  • 4.3Affected
SUSE Manager Server LTSSUSE Linux
  • 4.3Affected
SUSE Manager ProxySUSE Linux
  • 4.3Affected
SUSE Manager Retail Branch ServerSUSE Linux
  • 4.3Affected
openSUSE LeapSUSE Linux
  • 15.6Affected

References

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