THREATPORT/VULNERABILITY/CVE-2021-34746
CRITICAL SEVERITY

CVE-2021-34746

Enterprise Nfv Infrastructure Software vulnerability

CVSS
9.8
EPSS
17.7%
EPSS pct
97th
Exploited
No known
A vulnerability in the TACACS+ authentication, authorization and accounting (AAA) feature of Cisco Enterprise NFV Infrastructure Software (NFVIS) could allow an unauthenticated, remote attacker to bypass authentication and log in to an affected device as an administrator. This vulnerability is due to incomplete validation of user-supplied input that is passed to an authentication script. An attacker could exploit this vulnerability by injecting parameters into an authentication request. A successful exploit could allow the attacker to bypass authentication and log in as an administrator to the affected device.
Affected vendor
Cisco
Affected product
Enterprise Nfv Infrastructure Software
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
2021-09-02

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 17.7% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 97% of all scored CVEs.

Check your external exposure to CVE-2021-34746

  • Confirm whether Cisco Enterprise Nfv Infrastructure Software is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2021-34746.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-34746

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2021-34746 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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