THREATPORT/VULNERABILITY/CVE-2020-25928
CRITICAL SEVERITY

CVE-2020-25928

Nichestack Tcp\/Ip vulnerability

CVSS
9.8
EPSS
3.6%
EPSS pct
88th
Exploited
No known
The DNS feature in InterNiche NicheStack TCP/IP 4.0.1 is affected by: Buffer Overflow. The impact is: execute arbitrary code (remote). The component is: DNS response processing functions: dns_upcall(), getoffset(), dnc_set_answer(). The attack vector is: a specific DNS response packet. The code does not check the "response data length" field of individual DNS answers, which may cause out-of-bounds read/write operations, leading to Information leak, Denial-or-Service, or Remote Code Execution, depending on the context.
Affected vendor
Hcc Embedded
Affected product
Nichestack Tcp\/Ip
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness type (CWE)
Published
2021-08-18

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 3.6% 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-2020-25928

  • Confirm whether Hcc Embedded Nichestack Tcp\/Ip is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2020-25928.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2020-25928

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2020-25928 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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