CVE-2026-47857

Published: Aug 27, 2026Modified: Sep 4, 2026

5.9

Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitability: 2.2 / Impact: 3.6

Source: security@vmware.com (Secondary)

Description

In Reactor Core, applications that use the Flux.windowTimeout operator with fairBackpressure enabled are vulnerable to a Denial of Service (DoS) condition. Reactor Core 3.8.0 - 3.8.6 Reactor Core 3.5.0 - 3.7.19 Reactor Core 3.4.41 and earlier

Affected (3)

Products: Broadcom: Reactor Core

Broadcom

1 product

Reactor Core

Configuration A

3 vulnerable

Vulnerable Software	Affected Versions
Broadcom Reactor Core	Before 3.4.42
Broadcom Reactor Core	From 3.5.0 to 3.7.20
Broadcom Reactor Core	From 3.8.0 to 3.8.6.1

Related CWEs

CWE-190

Integer Overflow or Wraparound

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

References (1)

https://spring.io/security/cve-2026-47857

Source: security@vmware.com

Vendor Advisory

Timeline

No history available yet.