THREATPORT/VULNERABILITY/CVE-2020-35498
HIGH SEVERITY

CVE-2020-35498

Openvswitch vulnerability

CVSS
7.5
EPSS
8.0%
EPSS pct
94th
Exploited
No known
A vulnerability was found in openvswitch. A limitation in the implementation of userspace packet parsing can allow a malicious user to send a specially crafted packet causing the resulting megaflow in the kernel to be too wide, potentially causing a denial of service. The highest threat from this vulnerability is to system availability.
Affected vendor
Openvswitch
Affected product
Openvswitch
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness type (CWE)
  • CWE-400 — Uncontrolled Resource Consumption
Published
2021-02-11

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 availability.

Its EPSS score of 8.0% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 94% of all scored CVEs.

Check your external exposure to CVE-2020-35498

  • Confirm whether Openvswitch Openvswitch is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2020-35498.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2020-35498

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2020-35498 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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