Read the docs
TI-2025-44016 Aliases CVE-2025-66366GHSA-48x4-685f-c87v

Unauthenticated RRC Setup handling crashes Samsung Exynos baseband

Priority LOW 22CWE-129Published · Updated

Key facts

Attack vector
—
Privileges required
—
User interaction
—
Attack complexity
—
Impact type
—
Confidentiality · integrity · availability
—
Fix status
Fixed

No CVSS vector from any source. Fix status from CNA.

Summary

Samsung Semiconductor Exynos 1280, Exynos 1330, Exynos 1380, Exynos 1480, Exynos 2400 and other products are affected before July 2026. Improper validation of an array index (CWE-129) lets unauthenticated downlink RRC Setup messages crash the baseband. An unauthenticated attacker can trigger the crash.

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

Description from the CNA

Incorrect handling of unauthenticated downlink RRC Setup messages can cause the baseband to crash

Why it matters now

EPSS 0.0014 3rd percentileScored 2026-11-07
Fix Fixed Exynos 1280 (Samsung Semiconductor): July 2026Exynos 1330 (Samsung Semiconductor): July 2026+8 more products

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
Samsung SemiconductorExynos 1280before July 2026July 2026Patch availableCNA
Samsung SemiconductorExynos 1330before July 2026July 2026Patch availableCNA
Samsung SemiconductorExynos 1380before July 2026July 2026Patch availableCNA
Samsung SemiconductorExynos 1480before July 2026July 2026Patch availableCNA
Samsung SemiconductorExynos 2400before July 2026July 2026Patch availableCNA
Samsung SemiconductorExynos 1580before July 2026July 2026Patch availableCNA
Samsung SemiconductorExynos 2500before July 2026July 2026Patch availableCNA
Samsung SemiconductorExynos Modem 5300before July 2026July 2026Patch availableCNA
Samsung SemiconductorExynos Modem 5400before July 2026July 2026Patch availableCNA
Samsung SemiconductorExynos Modem 5410before July 2026July 2026Patch availableCNA
  • Exynos 1280 VendorSamsung Semiconductor Affected before July 2026 Fixed in July 2026 Patch available CNA
  • Exynos 1330 VendorSamsung Semiconductor Affected before July 2026 Fixed in July 2026 Patch available CNA
  • Exynos 1380 VendorSamsung Semiconductor Affected before July 2026 Fixed in July 2026 Patch available CNA
  • Exynos 1480 VendorSamsung Semiconductor Affected before July 2026 Fixed in July 2026 Patch available CNA
  • Exynos 2400 VendorSamsung Semiconductor Affected before July 2026 Fixed in July 2026 Patch available CNA
  • Exynos 1580 VendorSamsung Semiconductor Affected before July 2026 Fixed in July 2026 Patch available CNA
  • Exynos 2500 VendorSamsung Semiconductor Affected before July 2026 Fixed in July 2026 Patch available CNA
  • Exynos Modem 5300 VendorSamsung Semiconductor Affected before July 2026 Fixed in July 2026 Patch available CNA
  • Exynos Modem 5400 VendorSamsung Semiconductor Affected before July 2026 Fixed in July 2026 Patch available CNA
  • Exynos Modem 5410 VendorSamsung Semiconductor Affected before July 2026 Fixed in July 2026 Patch available CNA

Remediation

Update the affected Exynos chipsets and Exynos Modem products to the July 2026 release, which lists a fix for each product named above.

Written with Claude Haiku 5.5 from the sources below · 2026-11-05

  • Fix · CNA Exynos 1280 (Samsung Semiconductor) Fixed in July 2026
  • Fix · CNA Exynos 1330 (Samsung Semiconductor) Fixed in July 2026
  • Fix · CNA Exynos 1380 (Samsung Semiconductor) Fixed in July 2026
  • Fix · CNA Exynos 1480 (Samsung Semiconductor) Fixed in July 2026
  • Fix · CNA Exynos 2400 (Samsung Semiconductor) Fixed in July 2026
  • Fix · CNA Exynos 1580 (Samsung Semiconductor) Fixed in July 2026
  • Fix · CNA Exynos 2500 (Samsung Semiconductor) Fixed in July 2026
  • Fix · CNA Exynos Modem 5300 (Samsung Semiconductor) Fixed in July 2026
  • Fix · CNA Exynos Modem 5400 (Samsung Semiconductor) Fixed in July 2026
  • Fix · CNA Exynos Modem 5410 (Samsung Semiconductor) Fixed in July 2026

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Samsung Semiconductor Exynos 1280, Exynos 1330 and 8 more products July 2026

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2025-44017 Improper NAS DLTransport handling may crash Samsung Exynos basebandPriority LOW 22
    Show all 2 records →

Timeline

  1. 2026-11-05 Threatist record created from CVE-2025-66366
  2. 2026-11-05 Alias added: GHSA-48x4-685f-c87v

References

Other 1

  • TI-2026-85310 Out-of-bounds read in Samsung Exynos RRC message handling CVSS 3.1MEDIUM 5.5
  • TI-2026-85330 Insufficient length validation in Samsung Exynos Modem GNSS loader CVSS —
  • TI-2026-85329 Samsung Exynos GPU driver memory corruption from improper VMID validation CVSS —
  • TI-2026-85328 Out-of-bounds memory access in Samsung Exynos device driver CVSS —
  • TI-2026-85327 Reference count flaw in Samsung GPU driver corrupts memory CVSS —
  • TI-2026-85326 Improper synchronization in Samsung Exynos GPU driver corrupts memory CVSS —
See all 34 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences