THREATPORT/VULNERABILITY/CVE-2011-4968
MEDIUM SEVERITY

CVE-2011-4968

Nginx vulnerability

CVSS
4.8
EPSS
4.0%
EPSS pct
89th
Exploited
No known
nginx http proxy module does not verify peer identity of https origin server which could facilitate man-in-the-middle attack (MITM)
Affected vendor
F5
Affected product
Nginx
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Weakness type (CWE)
  • CWE-20 — Improper Input Validation
Published
2019-11-19

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, high attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to low impact to confidentiality, low impact to integrity.

Its EPSS score of 4.0% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 89% of all scored CVEs.

Check your external exposure to CVE-2011-4968

  • Confirm whether F5 Nginx is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2011-4968.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2011-4968

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2011-4968 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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Are you exposed to CVE-2011-4968?

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