Is CVE-2025-53094 in the CISA KEV catalog?

No. CVE-2025-53094 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the EPSS score for CVE-2025-53094?

CVE-2025-53094 has an EPSS score of 0.36% (28th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix or mitigate CVE-2025-53094?

No published fix for CVE-2025-53094 has been found yet. Check the linked vendor advisories for guidance as it becomes available.

CVE & CISA-KEV Catalog

CVE-2025-53094

UNSCORED

NVD

Description

ESPAsyncWebServer is an asynchronous HTTP and WebSocket server library for ESP32, ESP8266, RP2040 and RP2350. In versions up to and including 3.7.8, a CRLF (Carriage Return Line Feed) injection vulnerability exists in the construction and output of HTTP headers within `AsyncWebHeader.cpp`. Unsanitized input allows attackers to inject CR (`\r`) or LF (`\n`) characters into header names or values, leading to arbitrary header or response manipulation. Manipulation of HTTP headers and responses can enable a wide range of attacks, making the severity of this vulnerability high. A fix is available at pull request 211 and is expected to be part of version 3.7.9.

CWE-93 CWE-113

How to fix

No published remediation has been found for this vulnerability's affected products yet.

Mitigation guidance may be in the linked vendor advisories in the References section below.

CVSS v3.1 Vector

No CVSS vector data available.

Exploit Intelligence

0.36%probability of exploitation in 30 days

28thpercentile

Low risk: more likely to be exploited than 28% of all known CVEs.

References

Other references3

Embed a live status badge for CVE-2025-53094

Markdown

[![CVE-2025-53094](https://tridentstack.com/cve/badge/CVE-2025-53094.svg)](https://tridentstack.com/cve/CVE-2025-53094)

HTML

<a href="https://tridentstack.com/cve/CVE-2025-53094"><img src="https://tridentstack.com/cve/badge/CVE-2025-53094.svg" alt="CVE-2025-53094"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-06-30.