PatchTheCVECVE-2025-21429: Memory corruption occurs while connecting a STA to an AP and initiating an ADD TS request.
36
Routine
HIGH 7.5REMOTEMITIGATEMITIGATEMITIGATE
CVE-2025-21429 is a high-severity flaw (CVSS 7.5) affecting sa9000p firmware, sd626 firmware, sd660 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.
Why this priority
- High severity
- Remotely exploitable, no login, no user action
No fix is published yet: follow the downgrade or mitigation steps.
Risk facts
| CVSS score | 7.5 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.3% (top 82%) |
| CISA exploited list | No |
| Weakness | CWE-126 |
| Published | 2025-04-07 |
| Last modified | 2026-06-17 |
Publisher (CNA): Qualcomm, Inc. · Vendor: qualcomm
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
qualcomm sa9000p firmware MITIGATE
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.
qualcomm sd626 firmware MITIGATE
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.
qualcomm sd660 firmware MITIGATE
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.
qualcomm sd670 firmware MITIGATE
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.
qualcomm sd730 firmware MITIGATE
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.
qualcomm sd855 firmware MITIGATE
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 source NVD · 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.
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-2025-21429?
sa9000p firmware: mitigate or apply the listed mitigation; sd626 firmware: mitigate or apply the listed mitigation; sd660 firmware: mitigate or apply the listed mitigation. Exact commands for each OS are on this page.
Is CVE-2025-21429 being exploited?
CVE-2025-21429 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-2025-21429 affect?
CVE-2025-21429 affects sa9000p firmware, sd626 firmware, sd660 firmware. Severity is high (CVSS 7.5). Memory corruption occurs while connecting a STA to an AP and initiating an ADD TS request.
How urgent is CVE-2025-21429?
Priority 36/100. High severity; Remotely exploitable, no login, no user action
Software pages
Related CVEs
- CVE-2025-47402 MEDIUM 6.5 MITIGATE MITIGATE Transient DOS when processing a received frame with an excessively large authentication information element.
- CVE-2025-47398 HIGH 7.8 MITIGATE MITIGATE Memory Corruption while deallocating graphics processing unit memory buffers due to improper handling of memor
- CVE-2025-47385 HIGH 7.8 MITIGATE MITIGATE Memory Corruption when accessing trusted execution environment without proper privilege check.
- CVE-2025-47379 HIGH 7.8 MITIGATE MITIGATE Memory Corruption when concurrent access to shared buffer occurs due to improper synchronization between assig
- CVE-2025-21454 HIGH 7.5 MITIGATE MITIGATE Transient DOS while processing received beacon frame.