High severity · published Aug 13, 2025
CVE-2025-8671
No description published yet
7.5
CVSS
3.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.6% · higher than 89% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ED
Enterprise Desktop · SUSE Linux
15 SP6 before 15 SP7 · source: vendor
EH
Enterprise High Performance Computing · SUSE Linux
15 SP3 before 15 SP7 · source: vendor
EM
Enterprise Module for Dev Tools · SUSE Linux
15 SP3 before 15 SP7 · source: vendor
EM
Enterprise Module for Development Tools · SUSE Linux
15 SP2 before 15-SP5 · source: vendor
EM
Enterprise Module for Package Hub · SUSE Linux
15 SP5 before 15 SP7 · source: vendor
ES
Enterprise Server · SUSE Linux
12 SP5 before 15 SP7 · source: vendor
ES
Enterprise Server for SAP Applications · SUSE Linux
15 SP6 before 15 SP7 · source: vendor
H2
H20 · Fastly
579ecfa · source: vendor
LI
Linux · Wind River
LTS22 through TLS25 · source: vendor
SM