What is CVE-2021-42654?

CVE-2021-42654 is a critical-severity vulnerability in Sscms Siteserver Cms, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2022-05-24.

How severe is CVE-2021-42654?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Arbitrary file upload in Sscms Siteserver Cms

CVE-2021-42654

SiteServer CMS < V5.1 is affected by an unrestricted upload of a file with dangerous type (getshell), which could be used to execute arbitrary code.

Vulnerability class: Unrestricted File Upload

EPSS: 0.017 (74.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Sscms Siteserver_cms
N/a — versions n/a

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

cve@mitre.org (Product, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (Third Party Advisory, x_refsource_MISC, Issue Tracking)
cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-42654?: CVE-2021-42654 is a critical-severity vulnerability in Sscms Siteserver Cms, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2022-05-24.
How severe is CVE-2021-42654?: Critical severity. CVSS v3 base score is 9.8 out of 10.