CVE-2023-33040 Buffer Over-read in Data Modem
A buffer over-read in the Data Modem during DTLS handshake allows attackers to cause a transient denial of service on Qualcomm Snapdragon devices.
- 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-2023-33040?
CVE-2023-33040 is a high-severity denial of service vulnerability in Qualcomm 315 5g Iot Modem Firmware, published on 2 Jan 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Transient DOS in Data Modem during DTLS handshake.
Weakness: CWE-126
Which versions are affected by CVE-2023-33040?
It affects 144 products.
Products include Qualcomm 315 5g Iot Modem Firmware, Qualcomm Aqt1000 Firmware, Qualcomm Ar8035 Firmware, Qualcomm Csra6620 Firmware, Qualcomm Csra6640 Firmware, Qualcomm Csrb31024 Firmware and 138 more.
How do I fix CVE-2023-33040?
No fix has been published for CVE-2023-33040 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-2023-33040 being exploited?
There is no known exploitation of CVE-2023-33040 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-vgh7-9mhq-v768.