THREATPORT/VULNERABILITY/CVE-2021-27983
CRITICAL SEVERITY

CVE-2021-27983

Maxsite Cms vulnerability

CVSS
9.8
EPSS
3.5%
EPSS pct
88th
Exploited
No known
Remote Code Execution (RCE) vulnerability exists in MaxSite CMS v107.5 via the Documents page.
Affected vendor
Max 3000
Affected product
Maxsite Cms
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2021-12-10

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 3.5% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 88% of all scored CVEs.

Check your external exposure to CVE-2021-27983

  • Confirm whether Max 3000 Maxsite Cms is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2021-27983.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-27983

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2021-27983 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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Are you exposed to CVE-2021-27983?

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