THREATPORT/VULNERABILITY/CVE-2021-34820
HIGH SEVERITY

CVE-2021-34820

Novus Management System vulnerability

CVSS
7.5
EPSS
4.0%
EPSS pct
89th
Exploited
No known
Web Path Directory Traversal in the Novus HTTP Server. The Novus HTTP Server is affected by the Directory Traversal for Arbitrary File Access vulnerability. A remote, unauthenticated attacker using an HTTP GET request may be able to exploit this issue to access sensitive data. The issue was discovered in the NMS (Novus Management System) software through 1.51.2
Affected vendor
Aat
Affected product
Novus Management System
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness type (CWE)
Published
2021-07-19

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.

Its EPSS score of 4.0% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 89% of all scored CVEs.

Check your external exposure to CVE-2021-34820

  • Confirm whether Aat Novus Management System is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2021-34820.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-34820

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2021-34820 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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