CVE-2026-42945

Medienbericht

Exploit

EPSS 61.47%
Veröffentlicht 13.05.2026 14:12:43
Zuletzt bearbeitet 27.06.2026 05:16:45
Quelle f5sirt@f5.com
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NGINX ngx_http_rewrite_module vulnerability

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 unnamed Perl-Compatible Regular Expression (PCRE) capture (for example, $1, $2) with a replacement string that includes a question mark (?). An unauthenticated attacker along with conditions beyond its control can exploit this vulnerability by sending crafted HTTP requests. This may cause a heap buffer overflow in the NGINX worker process leading to a restart. Additionally, attackers can execute code on systems with Address Space Layout Randomization (ASLR) disabled or when the attacker can bypass ASLR.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Betroffene Produkte Warnungen 0 Metriken 4 CWE 2 Referenzen 43

NVD 13 VulnDex Vulnerability Enrichment 2

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 <= 2.5.1

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 <= 5.4.1

F5 ≫ Nginx Instance Manager Version >= 2.16.0 <= 2.21.1

F5 ≫ Nginx Open Source Version >= 0.6.27 <= 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

Diese Information steht angemeldeten Benutzern zur Verfügung.

Zu dieser CVE wurde keine Warnung gefunden.

EPSS Metriken
Typ	Quelle	Score	Percentile
EPSS	FIRST.org	61.47%	0.991

CVSS Metriken
Quelle	Base Score	Exploit Score	Impact Score	Vector String
f5sirt@f5.com	9.2	0	0	CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/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	8.1	2.2	5.9	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
0b0ca135-0b70-47e7-9f44-1890c2a1c46c	8.1	2.2	5.9	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE-122 Heap-based Buffer Overflow

A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

CWE-131 Incorrect Calculation of Buffer Size

The product does not correctly calculate the size to be used when allocating a buffer, which could lead to a buffer overflow.