THREATPORT/VULNERABILITY/CVE-2022-20625
MEDIUM SEVERITY

CVE-2022-20625

Firepower Extensible Operating System vulnerability

CVSS
4.3
EPSS
3.4%
EPSS pct
88th
Exploited
No known
A vulnerability in the Cisco Discovery Protocol service of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause the service to restart, resulting in a denial of service (DoS) condition. This vulnerability is due to improper handling of Cisco Discovery Protocol messages that are processed by the Cisco Discovery Protocol service. An attacker could exploit this vulnerability by sending a series of malicious Cisco Discovery Protocol messages to an affected device. A successful exploit could allow the attacker to cause the Cisco Discovery Protocol service to fail and restart. In rare conditions, repeated failures of the process could occur, which could cause the entire device to restart.
Affected vendor
Cisco
Affected product
Firepower Extensible Operating System
CVSS vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness type (CWE)
Published
2022-02-23

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable from an adjacent network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to low impact to availability.

Its EPSS score of 3.4% 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-2022-20625

  • Confirm whether Cisco Firepower Extensible Operating System is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2022-20625.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2022-20625

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2022-20625 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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