How severe is CVE-2016-20052?

CVE-2016-20052 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-2016-20052 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-20052?

CVE-2016-20052 affects Snewscms Snews. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-20052?

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-2016-20052 have an EU (EUVD) identifier?

Yes. CVE-2016-20052 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2016-10860.

When was CVE-2016-20052 published?

CVE-2016-20052 was published on 2026-04-04 and last updated on 2026-06-17.

CVE-2016-20052

CVE-2016-20052 is a critical-severity vulnerability in Snewscms Snews 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-434.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v4: 9.3
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2016-10860
Weakness: CWE-434
Affected product: Snewscms Snews
Published: 2026-04-04
Last modified: 2026-06-17

Description

Snews CMS 1.7 contains an unrestricted file upload vulnerability that allows unauthenticated attackers to upload arbitrary files including PHP executables to the snews_files directory. Attackers can upload malicious PHP files through the multipart form-data upload endpoint and execute them by accessing the uploaded file path to achieve remote code execution.

Frequently asked questions

What is CVE-2016-20052?: Snews CMS 1.7 contains an unrestricted file upload vulnerability that allows unauthenticated attackers to upload arbitrary files including PHP executables to the snews_files directory. Attackers can upload malicious PHP files through the multipart form-data upload endpoint and execute them by accessing the uploaded file path to achieve remote code execution.
How severe is CVE-2016-20052?: CVE-2016-20052 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-2016-20052 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-20052?: CVE-2016-20052 affects Snewscms Snews. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-20052?: 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-2016-20052 have an EU (EUVD) identifier?: Yes. CVE-2016-20052 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2016-10860.
When was CVE-2016-20052 published?: CVE-2016-20052 was published on 2026-04-04 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:snewscms:snews:*:*:*:*:*:*:*:*

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