THREATPORT/VULNERABILITY/CVE-2021-45839
MEDIUM SEVERITY

CVE-2021-45839

Tos vulnerability

CVSS
6.5
EPSS
9.7%
EPSS pct
95th
Exploited
No known
It is possible to obtain the first administrator's hash set up on the system in Terramaster F4-210, F2-210 TOS 4.2.X (4.2.15-2107141517) as well as other information such as MAC address, internal IP address etc. by performing a request to the /module/api.php?mobile/webNasIPS endpoint.
Affected vendor
Terra Master
Affected product
Tos
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Published
2022-04-25

Risk analysis

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

Its EPSS score of 9.7% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 95% of all scored CVEs.

Check your external exposure to CVE-2021-45839

  • Confirm whether Terra Master Tos is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2021-45839.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-45839

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2021-45839 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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Are you exposed to CVE-2021-45839?

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