Threats / SIMalliance / CVE-2019-16256
CVE-2019-16256
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
SIMalliance Toolbox Browser vulnerability
SIMalliance Toolbox Browser contains a command injection vulnerability allowing remote attackers to retrieve sensitive device information including location and IMEI, or execute arbitrary commands via crafted messages.
Verdict
Today item — known-exploited.
Remote attackers can inject commands through modified messages to compromise device integrity, exfiltrate telecommunications identifiers and location data, and potentially pivot to broader system compromise without authentication.
01
Is it exploitable?
— the evidence, ranked above the scoreReported exploitation
1 independent public report of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03).
Probability (EPSS)
EPSS 0.04949 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: SIMalliance, Toolbox Browser. Confirm exact fixed builds in the vendor advisory.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I craft a malicious message containing command injection payloads targeting the Toolbox Browser message handler.
Business
Device security perimeter is breached, enabling unauthorized access to sensitive telecommunications and location identifiers.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I execute injected commands to extract IMEI and location information from the compromised device.
Business
Customer privacy is violated through unauthorized collection of device identity and geolocation data, creating regulatory and reputational liability.
3
Lateral reach — past segmentation narrative 3
Attacker
I leverage command execution capabilities to establish persistence or pivot to adjacent systems on the network.
Business
Incident response costs and potential lateral movement through enterprise infrastructure increase organizational risk exposure.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05