CVE-2017-10819 — MaLion for Mac 4.3.0 to 5.2.1 does not properly validate certificates, which may allow an attacker to eavesdrop on an encrypted communication

MEDIUM

MaLion for Mac 4.3.0 to 5.2.1 does not properly validate certificates, which may allow an attacker to eavesdrop on an encrypted communication

Published Aug 4, 2017

5.9

MEDIUM

CVSS 3.1

EPSS 0.77%

MaLion for Mac 4.3.0 to 5.2.1 does not properly validate certificates, which may allow an attacker to eavesdrop on an encrypted communication.

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

Vendor

Product

Default status

Versions

n/a

Version	Status	Constraints
4.3.0 to 5.2.1	affected	-

No remediation recorded yet.

0.77% 0.00769

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

EPSS probability 0.00769

2021–2026

Table of values (9 key points)

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

Date	Score	Percentile	Model
Oct 1, 2026	0.77% (0.00769)	53.95th	v5 (v2026.06.15)
Sep 20, 2026	0.77% (0.00769)	54.08th	v5 (v2026.06.15)
Jul 20, 2024	0.10% (0.00097)	41.03th	v3 (v2023.03.01)
Jul 10, 2024	0.10% (0.00097)	40.99th	v3 (v2023.03.01)
Mar 7, 2023	0.10% (0.00097)	38.96th	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	0.62% (0.00624)	17.80th	v5 (v2026.06.15)
Apr 14, 2021	0.62% (0.00624)	0.00th	v1

Weaknesses (1)

CWE-295

Improper Certificate Validation

Link	Providers	Tags
http://www.intercom.co.jp/information/2017/0801.html		x_refsource_MISCVendor Advisory
https://jvn.jp/en/vu/JVNVU91587298/index.html		x_refsource_MISCThird Party AdvisoryVDB Entry