How severe is CVE-2018-12045?

CVE-2018-12045 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-2018-12045 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-12045?

CVE-2018-12045 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-2018-12045?

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.

When was CVE-2018-12045 published?

CVE-2018-12045 was published on 2018-06-08 and last updated on 2026-06-17.

CVE-2018-12045

CVE-2018-12045 is a critical-severity vulnerability in Dedecms 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 v2: 7.5
EPSS exploit prediction: 1% (69th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-434
Affected product: Dedecms
Published: 2018-06-08
Last modified: 2026-06-17

Description

DedeCMS through V5.7SP2 allows arbitrary file upload in dede/file_manage_control.php via a dede/file_manage_view.php?fmdo=upload request with an upfile1 parameter, as demonstrated by uploading a .php file.

Frequently asked questions

What is CVE-2018-12045?: DedeCMS through V5.7SP2 allows arbitrary file upload in dede/file_manage_control.php via a dede/file_manage_view.php?fmdo=upload request with an upfile1 parameter, as demonstrated by uploading a .php file.
How severe is CVE-2018-12045?: CVE-2018-12045 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-2018-12045 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (69th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-12045?: CVE-2018-12045 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-2018-12045?: 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.
When was CVE-2018-12045 published?: CVE-2018-12045 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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