7.4

CVE-2017-11506: tenable nessus Improper Certificate Validation

CVSS: 7.4v3.0HighModified
Published 09-08-2017Last modified 17-09-2024
Open JSON

Vulnerability summary

CVE-2017-11506 is a high (CVSS 7.4) Improper Certificate Validation vulnerability in tenable nessus. EPSS estimates a 0.57% chance of exploitation in the next 30 days, higher than 46.4% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.4/10
010
High · v3.0 (NVD)
EPSS score
0.57%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 09-08-2017
    PublishedVulnerability first disclosed.
  2. 17-09-2024
    Last modifiedVulnerability information updated.

Description

When linking a Nessus scanner or agent to Tenable.io or other manager, Nessus 6.x before 6.11 does not verify the manager's TLS certificate when making the initial outgoing connection. This could allow man-in-the-middle attacks.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

0.57%

Chance of exploitation in the next 30 days

Percentile

46%

Versus all other CVEs

30-day change

0.00 pp

From 0.57% on 21-09-2026

21-09-202621-10-2026
EPSS score
0.57%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Tenable1 product
  • nessus6.x before 6.11 | 6.0.0 | 6.0.1 | 6.0.2 | 6.1.0 | 6.1.1 | 6.1.2 | 6.2.0 | 6.2.1 | 6.3.0 | 6.3.1 | 6.3.2 | 6.3.3 | 6.3.4 | 6.3.5 | 6.3.6 | 6.3.7 | 6.4.0 | 6.4.1 | 6.4.2 | 6.4.3 | 6.5.0 | 6.5.1 | 6.5.2 | 6.5.3 | 6.5.4 | 6.5.5 | 6.5.6 | 6.6.0 | 6.6.1 | 6.6.2 | 6.7.0 | 6.8.0 | 6.8.1 | 6.9.0 | 6.9.1 | 6.9.2 | 6.9.3 | 6.10.0 | 6.10.1 | 6.10.2 | 6.10.3 | 6.10.4 | 6.10.5 | 6.10.6 | 6.10.7 | 6.10.8 | 6.10.9

1 vendor · 1 product

References

2 links