CVE-2018-16550 — TeamViewer 10.x through 13.x allows remote attackers to bypass the brute-force authentication protection mechanism by skipping the "Cancel" step, which makes it easier to determine the correct value of the default 4-digit PIN

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CRITICAL

TeamViewer 10.x through 13.x allows remote attackers to bypass the brute-force authentication protection mechanism by skipping the "Cancel" step, which makes it easier to determine the correct value of the default 4-digit PIN

Published Sep 5, 2018

9.8

CRITICAL

CVSS 3.0

EPSS 3.62%

Description

TeamViewer 10.x through 13.x allows remote attackers to bypass the brute-force authentication protection mechanism by skipping the "Cancel" step, which makes it easier to determine the correct value of the default 4-digit PIN.

Affected products

Remediation

No remediation recorded yet.

Metrics

3.62% 0.03621

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

EPSS probability 0.03621

Score over time

2021–2026

EPSS v1
EPSS v2
EPSS v3
EPSS v5

Percentile over time

EPSS v1
EPSS v2
EPSS v3
EPSS v5

Table of values (14 key points)

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

Date	Score	Percentile	Model
Oct 1, 2026	3.62% (0.03621)	89.15th	v5 (v2026.06.15)
Jun 15, 2026	3.72% (0.03722)	88.34th	v5 (v2026.06.15)
Jul 20, 2024	0.42% (0.00423)	74.49th	v3 (v2023.03.01)
Feb 8, 2024	0.42% (0.00423)	73.58th	v3 (v2023.03.01)
Jul 28, 2023	0.42% (0.00423)	70.89th	v3 (v2023.03.01)
Mar 7, 2023	0.60% (0.00599)	75.13th	v3 (v2023.03.01)
Mar 6, 2023	1.05% (0.01055)	52.13th	v2 (v2022.01.01)
Sep 17, 2022	1.05% (0.01055)	50.47th	v2 (v2022.01.01)
Apr 1, 2022	1.05% (0.01055)	48.43th	v2 (v2022.01.01)
Feb 4, 2022	1.05% (0.01055)	27.52th	v2 (v2022.01.01)
Feb 3, 2022	0.52% (0.00523)	12.55th	v1
Jan 6, 2022	0.52% (0.00523)	12.10th	v1
Sep 1, 2021	0.52% (0.00523)	32.27th	v1
Apr 14, 2021	0.52% (0.00523)	0.00th	v1

Weaknesses (0)

No CWE recorded.

References (1)

https://twitter.com/vah_13/status/1036894081350291457
x_refsource_MISCIssue TrackingThird Party Advisory

Link	Providers	Tags
https://twitter.com/vah_13/status/1036894081350291457		x_refsource_MISCIssue TrackingThird Party Advisory

Change history (0)

No recorded changes yet.

Sources

CVE.org / MITRE

Status PUBLISHED

Assigner mitre

Published Sep 5, 2018

Updated Aug 5, 2024

Reserved Sep 5, 2018

Link CVE-2018-16550

CISA Vulnrichment

Updated n/a

NVD

Status Modified

Modified Jun 17, 2026

Link CVE-2018-16550

Red Hat

Severity n/a

Public date n/a

Links CVE-2018-16550