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CVE-2025-41243 is an environment-property modification vulnerability in Spring Cloud Gateway Server WebFlux. An attacker who can access an enabled, unsecured Gateway actuator endpoint can modify Spring Environment properties. The issue does not apply to Spring Cloud Gateway Server WebMVC. Exploitation requires Spring Boot Actuator to be present, explicit exposure of the gateway endpoint, attacker network access to actuator endpoints, and the absence of endpoint security.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
18 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An incidental reference to a critical Spring Cloud Gateway vulnerability affecting Server WebFlux.
A previously addressed similar Spring vulnerability referenced for vendor security history; no specific technical details are provided in the content.
A critical (CVSS 10.0) unauthenticated remote code/expression injection issue in Spring Cloud Gateway related to exposed/unsecured Spring Boot Actuator gateway endpoint, allowing manipulation of the application runtime environment (e.g., environment variables) and potential sensitive data access and privilege escalation.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.