An Improper Authentication issue was discovered in General Motors (GM) and Shanghai OnStar (SOS) SOS iOS Client 7.1.

published 2018-01-09 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-4234

cvss: 8.8; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.9%; EPSS 1.9% chance of exploitation in 30 days, percentile 79%
public exploits: 0; none known

An Improper Authentication issue was discovered in General Motors (GM) and Shanghai OnStar (SOS) SOS iOS Client 7.1. Successful exploitation of this vulnerability may allow an attacker to subvert security mechanisms and reset a user account password.

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-17-234-04 updated 2018-01-09 cvss 8.8

General Motors and Shanghai OnStar (SOS) iOS Client

General Motors (GM), Shanghai OnStar (SOS) Shanghai OnStar iOS Client 7.1
affected: mitigation “Users should not root or jailbreak their phones to prevent the preconditions for attacker access to mobile phone memory, including the ability to read JSON web token encryption keys.”

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

1.85% chance of exploitation in the next 30 days, higher than 79% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.0	8.8	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	4.0	AV:N/AC:L/Au:S/C:N/I:P/A:N

Affected products

n/a General Motors and Shanghai OnStar (SOS) iOS Client

Classification

Weakness

CWE-287 Improper Authentication

References

ics-cert.us-cert.gov /advisories/ICSA-17-234-04
mitigation, third-party-advisory, us-government-resource
securityfocus.com /bid/102481
vdb-entry, third-party-advisory

Sources

CVE List CVE-2017-12695
NVD CVE-2017-12695

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary