What is CVE-2025-41243?

CVE-2025-41243 is a critical-severity vulnerability in Spring Cloud Gateway, classified under Improper Neutralization of Special Elements used in an Expression Language Statement (Expression Language Injection). CVSS score: 10.0/10. Published 2025-09-16.

How severe is CVE-2025-41243?

Critical severity. CVSS v3 base score is 10.0 out of 10.

Is CVE-2025-41243 known to be exploited?

4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

RCE in Spring Cloud Gateway

CVE-2025-41243

Spring Cloud Gateway Server Webflux may be vulnerable to Spring Environment property modification. An application should be considered vulnerable when all the following are true: * The application is using Spring Cloud Gateway Server…

Vulnerability class: Log4Shell (CVE-2021-44228)

EPSS: 0.064 (91.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

Affected products

Spring Cloud Gateway — versions 4.3.x, 4.2.x, 4.1.x, 4.0.x

Weakness classification (CWE)

Public proof-of-concept exploits

References

spring.io/security/cve-2025-41243

Frequently asked questions

What is CVE-2025-41243?: CVE-2025-41243 is a critical-severity vulnerability in Spring Cloud Gateway, classified under Improper Neutralization of Special Elements used in an Expression Language Statement (Expression Language Injection). CVSS score: 10.0/10. Published 2025-09-16.
How severe is CVE-2025-41243?: Critical severity. CVSS v3 base score is 10.0 out of 10.
Is CVE-2025-41243 known to be exploited?: 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.