How severe is CVE-2025-71284?

CVE-2025-71284 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-2025-71284 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-71284?

CVE-2025-71284 affects Synway Smg Gateway Management Software. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-71284?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-71284 have an EU (EUVD) identifier?

Yes. CVE-2025-71284 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-209597.

When was CVE-2025-71284 published?

CVE-2025-71284 was published on 2026-04-30 and last updated on 2026-06-17.

CVE-2025-71284

CVE-2025-71284 is a critical-severity vulnerability in Synway Smg Gateway Management Software with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-78.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 9.3
EPSS exploit prediction: 6% (92nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-209597
Weakness: CWE-78
Affected product: Synway Smg Gateway Management Software
Published: 2026-04-30
Last modified: 2026-06-17

Description

Synway SMG Gateway Management Software contains an OS command injection vulnerability in the RADIUS configuration endpoint at /en/9-2radius.php where the radius_address POST parameter is split and interpolated directly into a sed command without sanitization. An unauthenticated remote attacker can inject arbitrary shell commands by submitting a POST request with crafted radius_address, radius_address2, shared_secret2, source_ip, timeout, or retry parameters along with save=1 and enable_radius=1 to achieve remote code execution. Exploitation evidence was first observed by the Shadowserver Foundation on 2025-07-11 (UTC).

Frequently asked questions

What is CVE-2025-71284?: Synway SMG Gateway Management Software contains an OS command injection vulnerability in the RADIUS configuration endpoint at /en/9-2radius.php where the radius_address POST parameter is split and interpolated directly into a sed command without sanitization. An unauthenticated remote attacker can inject arbitrary shell commands by submitting a POST request with crafted radius_address, radius_address2, shared_secret2, source_ip, timeout, or retry parameters along with save=1 and enable_radius=1 to achieve remote code execution. Exploitation evidence was first observed by the Shadowserver Foundation on 2025-07-11 (UTC).
How severe is CVE-2025-71284?: CVE-2025-71284 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-2025-71284 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-71284?: CVE-2025-71284 affects Synway Smg Gateway Management Software. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-71284?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-71284 have an EU (EUVD) identifier?: Yes. CVE-2025-71284 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-209597.
When was CVE-2025-71284 published?: CVE-2025-71284 was published on 2026-04-30 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:synway:smg_gateway_management_software:-:*:*:*:*:*:*:*

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