How severe is CVE-2018-12046?

CVE-2018-12046 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2018-12046 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-12046?

CVE-2018-12046 primarily affects Dedecms. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-12046?

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

When was CVE-2018-12046 published?

CVE-2018-12046 was published on 2018-06-08 and last updated on 2026-06-17.

CVE-2018-12046

CVE-2018-12046 is a high-severity vulnerability in Dedecms with a CVSS 3.x base score of 7.5. 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-20.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (58th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Dedecms
Published: 2018-06-08
Last modified: 2026-06-17

Description

DedeCMS through 5.7SP2 allows arbitrary file write in dede/file_manage_control.php via a dede/file_manage_view.php?fmdo=newfile request with name and str parameters, as demonstrated by writing to a new .php file.

Frequently asked questions

What is CVE-2018-12046?: DedeCMS through 5.7SP2 allows arbitrary file write in dede/file_manage_control.php via a dede/file_manage_view.php?fmdo=newfile request with name and str parameters, as demonstrated by writing to a new .php file.
How severe is CVE-2018-12046?: CVE-2018-12046 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2018-12046 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (58th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-12046?: CVE-2018-12046 primarily affects Dedecms. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-12046?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-12046 published?: CVE-2018-12046 was published on 2018-06-08 and last updated on 2026-06-17.

References

https://github.com/SukaraLin/php_code_audit_project/blob/master/dedecms/dedecms%20v5.7%20sp2%20%E4%BB%A3%E7%A0%81%E5%AE%A1%E8%AE%A1.md

Affected products (4)

cpe:2.3:a:dedecms:dedecms:*:*:*:*:*:*:*:*
cpe:2.3:a:dedecms:dedecms:5.7:*:*:*:*:*:*:*
cpe:2.3:a:dedecms:dedecms:5.7:sp1:*:*:*:*:*:*
cpe:2.3:a:dedecms:dedecms:5.7:sp2:*:*:*:*:*:*

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