CVE-2025-53007 is a high-severity HTTP Response Splitting vulnerability affecting arduino-esp32 versions prior to 3.3.0-RC1 and 3.2.1. The flaw lies in the sendHeader function, which lacks proper validation of input for HTTP header names and values, allowing attackers to inject carriage return or line feed characters. This could lead to injection of additional headers, manipulation of HTTP responses, or full HTTP Response Splitting, with a CVSS score of 8.9 (HIGH). There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
| Espressif | Arduino-Esp32 | < 3.2.1, >= 3.3.0-alpha1, < 3.3.0-RC1CNA affected |
CVSS version used by this source: 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/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
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The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.