THREATPORT/VULNERABILITY/CVE-2016-1950
HIGH SEVERITY

CVE-2016-1950

Network Security Services vulnerability

CVSS
8.8
EPSS
4.2%
EPSS pct
90th
Exploited
No known
Heap-based buffer overflow in Mozilla Network Security Services (NSS) before 3.19.2.3 and 3.20.x and 3.21.x before 3.21.1, as used in Mozilla Firefox before 45.0 and Firefox ESR 38.x before 38.7, allows remote attackers to execute arbitrary code via crafted ASN.1 data in an X.509 certificate.
Affected vendor
Mozilla
Affected product
Network Security Services
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness type (CWE)
  • CWE-119 — Improper Restriction of Operations within Memory Bounds
Published
2016-03-13

Risk analysis

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

Its EPSS score of 4.2% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 90% of all scored CVEs.

Check your external exposure to CVE-2016-1950

  • Confirm whether Mozilla Network Security Services is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2016-1950.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2016-1950

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2016-1950 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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