CVE-2026-57546 Buffer Over-read in WLAN HAL
A buffer over-read in the WLAN HAL allows attackers to cause a transient denial of service via a zero-sized configuration override.
- 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-2026-57546?
CVE-2026-57546 is a high-severity denial of service vulnerability in Qualcomm Fastconnect 7800 Firmware, published on 6 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Transient DOS when processing a continuous receive command with a zero-sized global configuration override.
Weakness: CWE-126
Which versions are affected by CVE-2026-57546?
It affects 14 products.
Products include Qualcomm Congo Firmware, Qualcomm Fastconnect 7800 Firmware, Qualcomm Fastconnect 8800 Mobile Connectivity System Firmware, Qualcomm Orne Firmware, Qualcomm Pandeiro Firmware, Qualcomm Sm8950 Firmware and 8 more.
How do I fix CVE-2026-57546?
No fix has been published for CVE-2026-57546 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-2026-57546 being exploited?
There is no known exploitation of CVE-2026-57546 in the wild and no public exploit code.
Other vulnerabilities in Qualcomm Fastconnect 7800 Firmware
Sources
Also known as GHSA-5982-f562-35cj.