THREATPORT/VULNERABILITY/CVE-2016-9963
MEDIUM SEVERITY

CVE-2016-9963

Exim vulnerability

CVSS
5.9
EPSS
3.1%
EPSS pct
86th
Exploited
No known
Exim before 4.87.1 might allow remote attackers to obtain the private DKIM signing key via vectors related to log files and bounce messages.
Affected vendor
Exim
Affected product
Exim
CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness type (CWE)
Published
2017-02-01

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 high impact to confidentiality.

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-2016-9963

  • Confirm whether Exim Exim is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2016-9963.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2016-9963

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2016-9963 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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Are you exposed to CVE-2016-9963?

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