Is CVE-2025-25294 in the CISA KEV catalog?

No. CVE-2025-25294 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-25294?

CVE-2025-25294 has a CVSS v3 base score of 5.3 (MEDIUM).

What is the EPSS score for CVE-2025-25294?

CVE-2025-25294 has an EPSS score of 0.26% (18th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-25294?

Upgrade gateway to 1.3.1 or later.

CVE & CISA-KEV Catalog

CVE-2025-25294

MEDIUM

5.3

CVSS v3

NVD

Description

Envoy Gateway is an open source project for managing Envoy Proxy as a standalone or Kubernetes-based application gateway. In all Envoy Gateway versions prior to 1.2.7 and 1.3.1 a default Envoy Proxy access log configuration is used. This format is vulnerable to log injection attacks. If the attacker uses a specially crafted user-agent which performs json injection, then he could add and overwrite fields to the access log. This vulnerability is fixed in 1.3.1 and 1.2.7. One can overwrite the old text based default format with JSON formatter by modifying the "EnvoyProxy.spec.telemetry.accessLog" setting.

CWE-117

How to fix

Remediation Available

gatewayNVD

Affected:>= 1.3.0, < 1.3.1Fixed in:1.3.1CVE-2025-25294derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityLow

AvailabilityNone

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Exploit Intelligence

0.26%probability of exploitation in 30 days

18thpercentile

Low risk: more likely to be exploited than 18% of all known CVEs.

References

Patch1

github.com

Mitigation1

github.com

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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 2025-09-04.