CVE-2024-12174Network attack vector

Email interception via improper SMTP certificate validation

Published Dec 9, 2024 · Updated Dec 10, 2024

Improper certificate validation in Tenable Security Center 6.4.5 and earlier allows remote authenticated users to intercept sent email. The SMTP client accepts a rogue server certificate instead of rejecting the untrusted endpoint during outbound mail delivery. Administrator privileges and control of the SMTP route or endpoint are required, and the resulting impact is limited to disclosure of messages sent by Security Center.

CVSS severity2.7
Low
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper certificate validation in Tenable Security Center 6.4.5 and earlier allows remote authenticated users to intercept sent email. The SMTP client accepts a rogue server certificate instead of rejecting the untrusted endpoint during outbound mail delivery. Administrator privileges and control of the SMTP route or endpoint are required, and the resulting impact is limited to disclosure of messages sent by Security Center.

The record

CVE
CVE-2024-12174
Published
Dec 9, 2024
Updated
Dec 10, 2024
Vendor
Tenable
Product
Tenable Security Center
Classifications
CWE-295, T1557
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Dec 9, 2024CVE publishedPublication date reported by the CVE source.
  2. Dec 10, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <6.5.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Tenable · Tenable Security Centerversion=0 <6.5.0

Published CVSS scores

2.5Tenable Network Security, Inc.CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C
2.7Tenable Network Security, Inc.CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-295Improper Certificate Validation
T1557Adversary-in-the-Middle

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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