THREATPORT/VULNERABILITY/CVE-2017-2894
CRITICAL SEVERITY

CVE-2017-2894

Mongoose vulnerability

CVSS
9.8
EPSS
31.0%
EPSS pct
98th
Exploited
No known
An exploitable stack buffer overflow vulnerability exists in the MQTT packet parsing functionality of Cesanta Mongoose 6.8. A specially crafted MQTT SUBSCRIBE packet can cause a stack buffer overflow resulting in remote code execution. An attacker needs to send a specially crafted MQTT packet over the network to trigger this vulnerability.
Affected vendor
Cesanta
Affected product
Mongoose
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness type (CWE)
Published
2017-11-07

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 31.0% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 98% of all scored CVEs.

Check your external exposure to CVE-2017-2894

  • Confirm whether Cesanta Mongoose is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2017-2894.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2017-2894

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2017-2894 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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