CVE-2020-11292Public exploit

Modem code execution via unchecked QMI call count

Published Jun 9, 2021 · Updated Aug 4, 2024

A heap buffer overflow in Qualcomm Snapdragon QMI Voice allows local users to execute code in the modem via a crafted TLV request. The qmi_voicei_srvcc_call_config_req handler trusts an attacker-controlled call count and copies 0x160-byte call contexts into a fixed 0x5B90-byte heap allocation. Access requires a local SELinux domain permitted to use QMI Voice; the demonstrated payload overwrites modem heap memory and reboots the modem.

CVSS severity7.8
High
EPSS probability0.81%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

A heap buffer overflow in Qualcomm Snapdragon QMI Voice allows local users to execute code in the modem via a crafted TLV request. The qmi_voicei_srvcc_call_config_req handler trusts an attacker-controlled call count and copies 0x160-byte call contexts into a fixed 0x5B90-byte heap allocation. Access requires a local SELinux domain permitted to use QMI Voice; the demonstrated payload overwrites modem heap memory and reboots the modem.

The record

CVE
CVE-2020-11292
Published
Jun 9, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-120, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 9, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.8Qualcomm, Inc.CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.2NIST NVDAV:L/AC:L/Au:N/C:C/I:C/A:C

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1068Exploitation for Privilege Escalation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo