PatchTheCVECVE-2018-4301: This issue is fixed in SCSSU-201801
CVE-2018-4301 is a critical-severity flaw (CVSS 9.8) affecting smart card services. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
This issue is fixed in SCSSU-201801. A potential stack based buffer overflow existed in GemaltoKeyHandle.cpp.
Why this priority
- Critical severity
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 0.6% (top 53%) |
| CISA exploited list | No |
| Weakness | CWE-120 |
| Published | 2025-01-08 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2018-4301?
smart card services: upgrade to scssu-201801. Exact commands for each OS are on this page.
Is CVE-2018-4301 being exploited?
CVE-2018-4301 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2018-4301 affect?
CVE-2018-4301 affects smart card services. Severity is critical (CVSS 9.8). This issue is fixed in SCSSU-201801. A potential stack based buffer overflow existed in GemaltoKeyHandle.cpp.
How urgent is CVE-2018-4301?
Priority 51/100. Critical severity; Remotely exploitable, no login, no user action