An issue was discovered on Samsung mobile devices with N(7.0), O(8.0) (exynos7420 or…
Priority MEDIUM 42CWE-327Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-327.
Summary
An issue was discovered on Samsung mobile devices with N(7.0), O(8.0) (exynos7420 or Exynos 8890/8996 chipsets) software. Cache attacks can occur against the Keymaster AES-GCM implementation because T-Tables are used; the Cryptography Extension (CE) is not used. The Samsung ID is SVE-2018-12761 (September 2018).
Why it matters now
EPSS 0.00275 20th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:google:android:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | |
| cpe:2.3:o:google:android:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | |
| cpe:2.3:h:samsung:exynos_7420:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Samsung |
| cpe:2.3:h:samsung:exynos_8890:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Samsung |
| cpe:2.3:h:samsung:exynos_8996:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Samsung |
- cpe:2.3:o:google:android:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Google
- cpe:2.3:o:google:android:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Google
- cpe:2.3:h:samsung:exynos_7420:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Samsung
- cpe:2.3:h:samsung:exynos_8890:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Samsung
- cpe:2.3:h:samsung:exynos_8996:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Samsung
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2018-21058
- 2026-10-03 Alias added: GHSA-hx4h-wm85-vg58
References
More Google Android vulnerabilities
- TI-2026-42236 Improper authorization in Google Android KEVCVSS 3.1HIGH 8.8
- TI-2025-30821 Use after free in Google Android KEVCVSS 3.1HIGH 8.8
- TI-2023-17777 Improper privilege management in Google Android KEVCVSS 3.1HIGH 8.8
- TI-2025-30872 Integer overflow in Google Android KEVCVSS 3.1HIGH 8.4
- TI-2024-21766 there is a possible way to bypass due to a logic error in the code. KEVCVSS 3.1HIGH 8.1
- TI-2025-30849 Missing authentication in Google Android KEVCVSS 3.1HIGH 7.8
Sources
- CVE-2018-21058 · CVE Program
- CVE-2018-21058 · NVD
- FIRST EPSS
- GHSA-hx4h-wm85-vg58 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences