CVE-2025-66366
Incorrect handling of unauthenticated downlink RRC Setup messages can cause the baseband to crash
- 7.5HighCVSS base score
- 0.26%Exploitation in 30 daysEPSS · top 82% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Incorrect handling of unauthenticated downlink RRC Setup messages can cause the baseband to crash
Timeline
ID reserved
By samsungsemiconductor
- 11 months later
· 11 months later
Published
- 5 days later
· 5 days later
First scored
High 7.5
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CISA-ADPADP (enrichment) | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVDNVD · Deferred | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
- EPSS (exploitation in 30 days)
- 0.26% · top 82% of all CVEs (11 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: partial
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Affected products
Samsung Semiconductor · Exynos 1280
- affected < July 2026
Samsung Semiconductor · Exynos 1330
- affected < July 2026
Samsung Semiconductor · Exynos 1380
- affected < July 2026
Samsung Semiconductor · Exynos 1480
- affected < July 2026
Samsung Semiconductor · Exynos 2400
- affected < July 2026
Samsung Semiconductor · Exynos 1580
- affected < July 2026
Samsung Semiconductor · Exynos 2500
- affected < July 2026
Samsung Semiconductor · Exynos Modem 5300
- affected < July 2026
Samsung Semiconductor · Exynos Modem 5400
- affected < July 2026
Samsung Semiconductor · Exynos Modem 5410
- affected < July 2026
References
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2025-211265 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2025-66366)Record last updated .