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CVE-2021-20682
baserCMS versions prior to 4.4.5 allows a remote attacker with an administrative privilege to execute arbitrary OS commands via…
High7.2EPSS 2.5%
- Published
- Updated
- Reserved
- Assigned by
- jpcert
Description
baserCMS versions prior to 4.4.5 allows a remote attacker with an administrative privilege to execute arbitrary OS commands via unspecified vectors.
Timeline
ID reserved
By jpcert
- 3 months later
· 3 months later
Published
- 3 years later
· 3 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High7.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 2.5% · top 15% of all CVEs (7 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.2.
Weakness
- OS Command Injection
- CWE-78 (opens in a new tab)All about CWE-78 and its CVEs
Affected products
baserCMS Users Community · baserCMS
- affected versions prior to 4.4.5
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Packagistbaserproject/basercmsGHSA-g39q-f4rm-85x4 (opens in a new tab)
References (2)
- https://basercms.net/security/JVN64869876 (opens in a new tab)x_refsource_MISCx_transferred
- https://jvn.jp/en/jp/JVN64869876/index.html (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-g39q-f4rm-85x4 (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2021-20682)Record last updated .