CVE-2017-8445 — An error was found in the X-Pack Security TLS trust manager for versions 5.0.0 to 5.5.1

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MEDIUM

An error was found in the X-Pack Security TLS trust manager for versions 5.0.0 to 5.5.1

Published Aug 18, 2017

5.5

MEDIUM

CVSS 3.0

EPSS 0.16%

Description

An error was found in the X-Pack Security TLS trust manager for versions 5.0.0 to 5.5.1. If reloading the trust material fails the trust manager will be replaced with an instance that trusts all certificates. This could allow any node using any certificate to join a cluster. The proper behavior in this instance is for the TLS trust manager to deny all certificates.

Affected products

Vendor Elastic Product Elastic X-Pack Security Default
n/a
- Version
  5.0.0 to 5.5.1
  Status
  affected
  Constraints
  -

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

Elastic

Elastic X-Pack Security

n/a

Version	Status	Constraints
5.0.0 to 5.5.1	affected	-

Remediation

No remediation recorded yet.

Metrics

0.16% 0.00160

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.

EPSS probability 0.00160

Score over time

2021–2026

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Percentile over time

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Table of values (9 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 1, 2026	0.16% (0.00160)	4.46th	v5 (v2026.06.15)
Sep 20, 2026	0.16% (0.00160)	5.60th	v5 (v2026.06.15)
Jul 20, 2024	0.04% (0.00044)	12.95th	v3 (v2023.03.01)
May 25, 2024	0.04% (0.00044)	12.27th	v3 (v2023.03.01)
Mar 7, 2023	0.04% (0.00044)	10.26th	v3 (v2023.03.01)
Mar 6, 2023	0.89% (0.00885)	27.89th	v2 (v2022.01.01)
Feb 4, 2022	0.89% (0.00885)	10.50th	v2 (v2022.01.01)
Feb 3, 2022	0.42% (0.00416)	10.04th	v5 (v2026.06.15)
Apr 14, 2021	0.42% (0.00416)	0.00th	v1