CVE-2026-42946

medium F5
CVSS v3 Base Score
6.5
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:L
EPSS Score
0.8%
Exploitation probability in 30 days
Top 47% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Confidentiality
High
Integrity
None
Availability
Low
Published: May 13, 2026 (57 days ago)
Last Modified: June 16, 2026
Vendor: F5
Source: NVD

Description

A vulnerability exists in the ngx_http_scgi_module and ngx_http_uwsgi_module modules that may result in excessive memory allocation or an over-read of data. When scgi_pass or uwsgi_pass is configured, an unauthenticated attacker with man-in-the-middle (MITM) ability to control responses from an upstream server may be able to read the memory of the NGINX worker process or restart it.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

CWE

CWE-789

Affected Products

f5 dosf5 nginx app protect dosf5 nginx app protect waff5 nginx gateway fabricf5 nginx ingress controllerf5 nginx instance managerf5 nginx open sourcef5 nginx plusf5 waf

References

🔗 my.f5.com