CVE-2021-30310

What it is

Possible buffer overflow due to Improper validation of received CF-ACK and CF-Poll data frames in Snapdragon Auto, Snapdragon Connectivity, Snapdragon Consumer Electronics Connectivity, Snapdragon Consumer IOT, Snapdragon Industrial IOT, Snapdragon IoT, Snapdragon Mobile, Snapdragon Voice & Music

At a glance

Exploitability

Can be exploited over the network without logging in. High risk of service disruption.

Exploit odds

0.6% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2021-10-20 07:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 03:50 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 0.6% in the next 30 days (EPSS).
• Severity: 7.5 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2021-10-20 07:15 UTC

Last modified

2026-06-17 03:50 UTC

Exploit probability

0.6% · EPSS, next 30 days

Weakness

CWE-20 · Improper input validation

Record status

Modified

Affected

• Qualcomm apq8009 Firmware
• Qualcomm apq8017 Firmware
• Qualcomm apq8053 Firmware
• Qualcomm apq8096au Firmware
• Qualcomm csrb31024 Firmware
• Qualcomm mdm9206 Firmware
• Qualcomm mdm9250 Firmware
• Qualcomm mdm9607 Firmware

Attack profile CVSS 3.1 · 7.5

Attack vector

Network

Complexity

Low

Privileges needed

None

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2021-30310.md and follow it. Check whether this project is affected by CVE-2021-30310. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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