CVE-2025-21428: Memory corruption occurs while connecting a STA to an AP and initiating an ADD TS request from the AP to estab
36
Routine
HIGH 7.5REMOTEMITIGATEMITIGATEMITIGATE
CVE-2025-21428 is a high-severity flaw (CVSS 7.5) affecting snapdragon 439 mobile platform firmware, snapdragon 625 mobile platform firmware, snapdragon 626 mobile platform firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
Memory corruption occurs while connecting a STA to an AP and initiating an ADD TS request from the AP to establish a TSpec session.
Why this priority
High severity
Remotely exploitable, no login, no user action
No fix is published yet: follow the downgrade or mitigation steps.
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
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Affected: all versions
Fixed in: no fixed release known
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
Verify at the official sourceNVD · CVE Program · Report a problem with this page Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2025-21428?
snapdragon 439 mobile platform firmware: mitigate or apply the listed mitigation; snapdragon 625 mobile platform firmware: mitigate or apply the listed mitigation; snapdragon 626 mobile platform firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2025-21428 being exploited?
CVE-2025-21428 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2025-21428 affect?
CVE-2025-21428 affects snapdragon 439 mobile platform firmware, snapdragon 625 mobile platform firmware, snapdragon 626 mobile platform firmware. Severity is high (CVSS 7.5). Memory corruption occurs while connecting a STA to an AP and initiating an ADD TS request from the AP to establish a TSpec session.
How urgent is CVE-2025-21428?
Priority 36/100. High severity; Remotely exploitable, no login, no user action
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