CVE-2020-21787
CVE-2020-21787 is a critical-severity vulnerability in Crmeb 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: 10.0
- EPSS exploit prediction: 2% (77th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-434
- Affected product: Crmeb
- Published:
- Last modified:
Description
CRMEB 3.1.0+ is vulnerable to File Upload Getshell via /crmeb/crmeb/services/UploadService.php.
Frequently asked questions
- What is CVE-2020-21787?
- CRMEB 3.1.0+ is vulnerable to File Upload Getshell via /crmeb/crmeb/services/UploadService.php.
- How severe is CVE-2020-21787?
- CVE-2020-21787 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-2020-21787 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-21787?
- CVE-2020-21787 affects Crmeb. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2020-21787?
- 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-2020-21787 published?
- CVE-2020-21787 was published on 2021-06-24 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:crmeb:crmeb:3.1.0\+:*:*:*:*:*:*:*
More vulnerabilities in Crmeb
- CVE-2025-25763 — Critical (CVSS 9.8): crmeb CRMEB-KY v5.4.0 and before has a SQL Injection vulnerability at getRead() in /system/SystemDatabackupServices.php
- CVE-2023-30185 — Critical (CVSS 9.8): CRMEB v4.4 to v4.6 was discovered to contain an arbitrary file upload vulnerability via the component…
- CVE-2020-25466 — Critical (CVSS 9.8): A SSRF vulnerability exists in the downloadimage interface of CRMEB 3.0, which can remotely download arbitrary files on…
- CVE-2020-21394 — High (CVSS 8.8): SQL Injection vulnerability in Zhong Bang Technology Co., Ltd CRMEB mall system V2.60 and V3.1 via the tablename…
- CVE-2024-52726 — High (CVSS 7.5): CRMEB v5.4.0 is vulnerable to Arbitrary file read in the save_basics function which allows an attacker to obtain…
- CVE-2024-50653 — High (CVSS 7.5): CRMEB <=5.4.0 is vulnerable to Incorrect Access Control. Users can bypass the front-end restriction of only being able…
Other CWE-434 (Unrestricted Upload of File with Dangerous Type) vulnerabilities
- CVE-2026-48283 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Unrestricted Upload of File with Dangerous Type…
- CVE-2026-48276 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Unrestricted Upload of File with Dangerous Type…
- CVE-2026-57700 — Critical (CVSS 10.0): Unrestricted Upload of File with Dangerous Type vulnerability in Daan.Dev OMGF Pro allows Using Malicious Files. This…
- CVE-2025-69129 — Critical (CVSS 10.0): Unauthenticated Arbitrary File Upload in WordPress & WooCommerce Scraper Plugin, Import Data from Any Site <= 1.0.7…
- CVE-2026-40772 — Critical (CVSS 10.0): Unauthenticated Arbitrary File Upload in GeekyBot <= 1.2.2 versions.
- CVE-2026-40412 — Critical (CVSS 10.0): Unrestricted upload of file with dangerous type in Azure Orbital Spatio allows an unauthorized attacker to execute code…
Browse all CWE-434 (Unrestricted Upload of File with Dangerous Type) vulnerabilities →