THREATPORT/VULNERABILITY/CVE-2021-46461
CRITICAL SEVERITY

CVE-2021-46461

Njs vulnerability

CVSS
9.8
EPSS
3.1%
EPSS pct
86th
Exploited
No known
njs through 0.7.0, used in NGINX, was discovered to contain an out-of-bounds array access via njs_vmcode_typeof in /src/njs_vmcode.c.
Affected vendor
Nginx
Affected product
Njs
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness type (CWE)
  • CWE-119 — Improper Restriction of Operations within Memory Bounds
Published
2022-02-14

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 3.1% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 86% of all scored CVEs.

Check your external exposure to CVE-2021-46461

  • Confirm whether Nginx Njs is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2021-46461.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2021-46461

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2021-46461 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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