CVE-2025-66366: Samsung Semiconductor Exynos 1280 · Improper Validation of Array Index
Affects Samsung Semiconductor Exynos 1280Source CVE Database V5
Not known to be exploited : upgrade to July 2026 soon.
Data as of 5 Nov 2026, 03:12 UTC
Rated High by Threat Radar's AI analysis · No CVSS score from NVD or the CNA
Thin evidence
One scorer or none- Patch
- Available – fixed in July 2026
Exploitation evidence
Disclosed: evidence found.
CVE published 5 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.
What to do
Upgrade Exynos to July 2026.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Samsung SemiconductorExynos 1280 | Affected
| Fixed in
|
| Samsung SemiconductorExynos 1330 | Affected
| Fixed in
|
| Samsung SemiconductorExynos 1380 | Affected
| Fixed in
|
| Samsung SemiconductorExynos 1480 | Affected
| Fixed in
|
| Samsung SemiconductorExynos 2400 | Affected
| Fixed in
|
| Samsung SemiconductorExynos 1580 | Affected
| Fixed in
|
AI-suggested
A fix for this vulnerability was released in July 2026. Users and device manufacturers should apply the official patch to remediate the issue. No additional mitigation steps are indicated.
Description
CVE-2025-66366 is a vulnerability in the Samsung Semiconductor Exynos 1280 chipset where improper validation of array indices in handling unauthenticated downlink RRC Setup messages can cause the baseband to crash. This flaw was fixed in July 2026.