CVE-2022-40536 Improper authentication in Modem
An attacker can cause a transient denial of service in Qualcomm Snapdragon modems by sending a specific plain TLB OTA request message.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2022-40536?
CVE-2022-40536 is a high-severity denial of service vulnerability in Qualcomm 315 5g Iot Modem Firmware, published on 6 Jun 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Transient DOS due to improper authentication in modem while receiving plain TLB OTA request message from network.
Which versions are affected by CVE-2022-40536?
It affects 81 products.
Products include Qualcomm 315 5g Iot Modem Firmware, Qualcomm Ar8035 Firmware, Qualcomm Qca6390 Firmware, Qualcomm Qca6391 Firmware, Qualcomm Qca6421 Firmware, Qualcomm Qca6426 Firmware and 75 more.
How do I fix CVE-2022-40536?
No fix has been published for CVE-2022-40536 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2022-40536 being exploited?
There is no known exploitation of CVE-2022-40536 in the wild and no public exploit code.
Other vulnerabilities in Qualcomm 315 5g Iot Modem Firmware
- CVE-2023-33107 Qualcomm Multiple Chipsets Integer Overflow
- CVE-2023-33063 Qualcomm Multiple Chipsets Use-After-Free
- CVE-2025-27034 Improper Validation of Array Index in Multi-Mode Call Processor
- CVE-2023-22388 Use of Out-of-range Pointer Offset in Multi-mode Call Processor
- CVE-2023-28578 Improper Input Validation in Services
Sources
Also known as GHSA-jrg7-q7cg-93r8.