F5 Dos vulnerabilities

8 CVEs affecting F5 Dos, 0 known to be exploited (CISA KEV), with EPSS scores. Latest: CVE-2026-48142, published 2026-06-17.

Highest priority

Known exploited (CISA KEV) first, then by EPSS exploit probability.

CVE-2026-42055, published 2026-06-17. High severity, CVSS 8.1. EPSS: 6.5% chance of exploitation in the next 30 days. NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_proxy_v2_module and ngx_http_grpc_module modules. This vulnerability exists when the proxy_http_version to 2 or…
CVE-2026-42945, published 2026-05-13. High severity, CVSS 8.1. EPSS: 3.4% chance of exploitation in the next 30 days. NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_rewrite_module module. This vulnerability exists when the rewrite directive is followed by a rewrite, if, or set directive and an…
CVE-2026-9256, published 2026-05-22. High severity, CVSS 8.1. EPSS: 2.7% chance of exploitation in the next 30 days. NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_rewrite_module module. This vulnerability exists when a rewrite directive uses a regex pattern with distinct, overlapping…
CVE-2026-42946, published 2026-05-13. High severity, CVSS 7.4. EPSS: 0.9% chance of exploitation in the next 30 days. 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…
CVE-2026-42934, published 2026-05-13. Medium severity, CVSS 4.8. EPSS: 0.7% chance of exploitation in the next 30 days. NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_charset_module module. When charset, source_charset, and charset_map and proxy_pass with disabled buffering ("off") directives…
CVE-2026-40701, published 2026-05-13. Medium severity, CVSS 4.8. EPSS: 0.7% chance of exploitation in the next 30 days. NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_ssl_module module when the ssl_verify_client directive is set to "on" or "optional," and the ssl_ocsp directive is set to "on" or…
CVE-2026-40460, published 2026-05-13. Medium severity, CVSS 6.5. EPSS: 0.4% chance of exploitation in the next 30 days. When NGINX Plus or NGINX Open Source are configured to use the HTTP/3 QUIC module, an attacker may be able to spoof their source IP address allowing for bypass of authorization or bypass of rate…
CVE-2026-48142, published 2026-06-17. Medium severity, CVSS 4.8. EPSS: 0.4% chance of exploitation in the next 30 days. NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_charset_module module. When content is served or proxied through a location block with both source_charset utf-8; and a…