THREATPORT/VULNERABILITY/CVE-2021-34805
HIGH SEVERITY

CVE-2021-34805

Faust Iserver vulnerability

CVSS
7.5
EPSS
26.8%
EPSS pct
98th
Exploited
No known
An issue was discovered in FAUST iServer before 9.0.019.019.7. For each URL request, it accesses the corresponding .fau file on the operating system without preventing %2e%2e%5c directory traversal.
Affected vendor
Land Software
Affected product
Faust Iserver
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
2022-01-31

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 26.8% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 98% of all scored CVEs.

Check your external exposure to CVE-2021-34805

  • Confirm whether Land Software Faust Iserver is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2021-34805.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-34805

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