CVE-2018-18874
CVE-2018-18874 is a critical-severity vulnerability in Nconsulting Nc-cms 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: 2% (79th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-434
- Affected product: Nconsulting Nc-cms
- Published:
- Last modified:
Description
nc-cms through 2017-03-10 allows remote attackers to execute arbitrary PHP code via the "Upload File or Image" feature, with a .php filename and "Content-Type: application/octet-stream" to the index.php?action=file_manager_upload URI.
Frequently asked questions
- What is CVE-2018-18874?
- nc-cms through 2017-03-10 allows remote attackers to execute arbitrary PHP code via the "Upload File or Image" feature, with a .php filename and "Content-Type: application/octet-stream" to the index.php?action=file_manager_upload URI.
- How severe is CVE-2018-18874?
- CVE-2018-18874 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-2018-18874 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-18874?
- CVE-2018-18874 affects Nconsulting Nc-cms. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2018-18874?
- 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-2018-18874 published?
- CVE-2018-18874 was published on 2018-10-31 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:nconsulting:nc-cms:*:*:*:*:*:*:*:*
More vulnerabilities in Nconsulting Nc-cms
- CVE-2019-7721 — High (CVSS 7.5): lib/NCCms.class.php in nc-cms 3.5 allows upload of .php files via the index.php?action=save name and editordata…
- CVE-2018-18361 — Medium (CVSS 6.1): An issue was discovered in nc-cms through 2017-03-10. index.php?action=edit_html allows XSS via the name parameter, as…
- CVE-2018-18290 — Medium (CVSS 4.8): An issue was discovered in nc-cms through 2017-03-10. index.php?action=edit_html&name=home_content allows XSS via the…
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