6.3

CVE-2026-40701

Medienbericht

NGINX ngx_http_ssl_module vulnerability

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 the leaf parameters are configured with a resolver. With this configuration, an unauthenticated attacker can send requests along with conditions beyond its control that may cause a heap-use-after-free error in the NGINX worker process. This vulnerability may result in limited modification of data or the NGINX worker process restarting.



 Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
F5 ≫ Dos SwPlatformnginx Version >= 4.3.0 <= 4.7.0
F5 ≫ Dos Version4.8.0 SwPlatformnginx
F5 ≫ Nginx Gateway Fabric Version >= 1.3.0 <= 1.6.2
F5 ≫ Nginx Gateway Fabric Version >= 2.0.0 <= 2.6.0
F5 ≫ Nginx Ingress Controller Version >= 3.5.0 <= 3.7.2
F5 ≫ Nginx Ingress Controller Version >= 4.0.0 <= 4.0.1
F5 ≫ Nginx Ingress Controller Version >= 5.0.0 <= 5.4.2
F5 ≫ Nginx Instance Manager Version >= 2.16.0 <= 2.22.0
F5 ≫ Nginx Open Source Version >= 1.19.0 <= 1.30.0
F5 ≫ Nginx Plus Version >= r32 <= r36
F5 ≫ Waf SwPlatformnginx Version >= 4.9.0 <= 4.16.0
F5 ≫ Waf SwPlatformnginx Version >= 5.1.0 <= 5.8.0
F5 ≫ Waf SwPlatformnginx Version >= 5.9.0 <= 5.12.1
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.68% 0.474
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
f5sirt@f5.com 6.3 0 0
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
f5sirt@f5.com 4.8 2.2 2.5
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
CWE-416 Use After Free

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

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19.05.2026 09:16
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Media Report
14.05.2026 17:52
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14.05.2026 08:51
https://my.f5.com/manage/s/article/K000161021
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