THREATPORT/VULNERABILITY/CVE-2016-4970
HIGH SEVERITY

CVE-2016-4970

Netty vulnerability

CVSS
7.5
EPSS
11.3%
EPSS pct
96th
Exploited
No known
handler/ssl/OpenSslEngine.java in Netty 4.0.x before 4.0.37.Final and 4.1.x before 4.1.1.Final allows remote attackers to cause a denial of service (infinite loop).
Affected vendor
Netty
Affected product
Netty
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-835 — Loop with Unreachable Exit Condition (Infinite Loop)
Published
2017-04-13

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 11.3% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 96% of all scored CVEs.

Check your external exposure to CVE-2016-4970

  • Confirm whether Netty Netty is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2016-4970.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2016-4970

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2016-4970 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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