THREATPORT/VULNERABILITY/CVE-2016-1421
HIGH SEVERITY

CVE-2016-1421

Ip Phone vulnerability

CVSS
7.5
EPSS
4.1%
EPSS pct
90th
Exploited
No known
A vulnerability in the web application for Cisco IP Phones could allow an unauthenticated, remote attacker to execute code with root privileges or cause a reload of an affected IP phone, resulting in a denial of service (DoS) condition. The vulnerability exists because the affected software fails to check the bounds of input data. An attacker could exploit this vulnerability by sending a crafted HTTP request to the web server of a targeted device. A successful exploit could allow the attacker to remotely execute code with root privileges or cause a reload of an affected IP phone, resulting in a DoS condition.
Affected vendor
Cisco
Affected product
Ip Phone
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness type (CWE)
  • CWE-119 — Improper Restriction of Operations within Memory Bounds
Published
2016-06-10

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 4.1% 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-2016-1421

  • Confirm whether Cisco Ip Phone is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2016-1421.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2016-1421

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2016-1421 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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