How severe is CVE-2025-11953?

CVE-2025-11953 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-11953 being actively exploited?

Yes. CVE-2025-11953 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2026-02-05, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2025-11953?

CVE-2025-11953 primarily affects React-native-community React Native Community Cli. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2025-11953?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2025-11953 have an EU (EUVD) identifier?

Yes. CVE-2025-11953 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-37505. It is also flagged as exploited in the EUVD (since 2026-02-05).

When was CVE-2025-11953 published?

CVE-2025-11953 was published on 2025-11-03 and last updated on 2026-06-17.

CVE-2025-11953

CVE-2025-11953 is a critical-severity vulnerability in React-native-community React Native Community Cli with a CVSS 3.x base score of 9.8. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2026-02-05). The underlying weakness is classified as CWE-78.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 62% (99th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2026-02-05)
EU (EUVD) id: EUVD-2025-37505
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2026-02-05)
Weakness: CWE-78
Affected product: React-native-community React Native Community Cli
Published: 2025-11-03
Last modified: 2026-06-17

Description

The Metro Development Server, which is opened by the React Native Community CLI, binds to external interfaces by default. The server exposes an endpoint that is vulnerable to OS command injection. This allows unauthenticated network attackers to send a POST request to the server and run arbitrary executables. On Windows, the attackers can also execute arbitrary shell commands with fully controlled arguments.

Frequently asked questions

What is CVE-2025-11953?: The Metro Development Server, which is opened by the React Native Community CLI, binds to external interfaces by default. The server exposes an endpoint that is vulnerable to OS command injection. This allows unauthenticated network attackers to send a POST request to the server and run arbitrary executables. On Windows, the attackers can also execute arbitrary shell commands with fully controlled arguments.
How severe is CVE-2025-11953?: CVE-2025-11953 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-11953 being actively exploited?: Yes. CVE-2025-11953 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2026-02-05, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2025-11953?: CVE-2025-11953 primarily affects React-native-community React Native Community Cli. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2025-11953?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2025-11953 have an EU (EUVD) identifier?: Yes. CVE-2025-11953 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-37505. It is also flagged as exploited in the EUVD (since 2026-02-05).
When was CVE-2025-11953 published?: CVE-2025-11953 was published on 2025-11-03 and last updated on 2026-06-17.

References

Affected products (5)

cpe:2.3:a:react-native-community:react_native_community_cli:*:*:*:*:*:*:*:*
cpe:2.3:a:react-native-community:react_native_community_cli:18.0.0:*:*:*:*:*:*:*
cpe:2.3:a:react-native-community:react_native_community_cli:20.0.0:alpha0:*:*:*:*:*:*
cpe:2.3:a:react-native-community:react_native_community_cli:20.0.0:alpha1:*:*:*:*:*:*
cpe:2.3:a:react-native-community:react_native_community_cli:20.0.0:alpha2:*:*:*:*:*:*

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