Qualcomm components are widely deployed in smartphones and embedded devices; unauthenticated RCE could enable broad device compromise and supply-chain impact.
CVE-2026-25254
Unauthenticated RCE via Socket.IO in Qualcomm components (CVE-2026-25254)
Is CVE-2026-25254 being exploited?
Not confirmed. CVE-2026-25254 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.73% probability of exploitation in the next 30 days.
How severe is CVE-2026-25254?
CVE-2026-25254 is rated Critical with a CVSS score of 9.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-25254?
Yes. A fix has been recorded for CVE-2026-25254. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-25254 affect?
CVE-2026-25254 affects Qualcomm SoC/firmware with Socket.IO service, Smartphones using affected Qualcomm components, Embedded devices/IoT using affected Qualcomm modules. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-25254?
Apply vendor bulletin mitigations/patches and restrict Socket.IO exposure
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Remote code execution through an improperly authorized Socket.IO interface, enabling full device compromise, persistence, and remote control.
Immediate action required
- affectedQSCv1.17.1
- affectedQSCv1.19.1
- affectedQSCv1.21.0
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.