CVE-2018-3693

CVE-2018-3693 is a medium-severity vulnerability in Intel Atom C with a CVSS 3.x base score of 5.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

• Severity: Medium (CVSS 3.x base score 5.6)
• CVSS v2: 4.7
• EPSS exploit prediction: 8% (94th percentile)
• Actively exploited: Not listed in CISA KEV
• Affected product: Intel Atom C
• Published: 2018-07-10
• Last modified: 2026-06-17

Description

Systems with microprocessors utilizing speculative execution and branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a speculative buffer overflow and side-channel analysis.

Frequently asked questions

What is CVE-2018-3693?

Systems with microprocessors utilizing speculative execution and branch prediction may allow unauthorized disclosure of information to an attacker with local user access via a speculative buffer overflow and side-channel analysis.

How severe is CVE-2018-3693?

CVE-2018-3693 has a CVSS 3.x base score of 5.6, rated medium severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2018-3693 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 8% (94th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-3693?

CVE-2018-3693 primarily affects Intel Atom C. In total, 1092 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-3693?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2018-3693 published?

CVE-2018-3693 was published on 2018-07-10 and last updated on 2026-06-17.

References

• https://access.redhat.com/errata/RHSA-2018:2384
• https://access.redhat.com/errata/RHSA-2018:2390
• https://access.redhat.com/errata/RHSA-2018:2395
• https://access.redhat.com/errata/RHSA-2019:1946
• https://access.redhat.com/errata/RHSA-2020:0174
• https://cdrdv2.intel.com/v1/dl/getContent/685359
• https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0
• https://security.netapp.com/advisory/ntap-20180823-0001/
• https://www.oracle.com/security-alerts/cpujul2020.html
• https://www.oracle.com/security-alerts/cpuoct2020.html
• https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html

Affected products (1092)

• cpe:2.3:h:intel:atom_c:c2308:*:*:*:*:*:*:*
• cpe:2.3:h:intel:atom_c:c2316:*:*:*:*:*:*:*
• cpe:2.3:h:intel:atom_c:c2338:*:*:*:*:*:*:*
• cpe:2.3:h:intel:atom_c:c2350:*:*:*:*:*:*:*
• cpe:2.3:h:intel:atom_c:c2358:*:*:*:*:*:*:*
• cpe:2.3:h:intel:atom_c:c2508:*:*:*:*:*:*:*
• cpe:2.3:h:intel:atom_c:c2516:*:*:*:*:*:*:*
• cpe:2.3:h:intel:atom_c:c2518:*:*:*:*:*:*:*
• cpe:2.3:h:intel:atom_c:c2530:*:*:*:*:*:*:*
• cpe:2.3:h:intel:atom_c:c2538:*:*:*:*:*:*:*
• cpe:2.3:h:intel:atom_c:c2550:*:*:*:*:*:*:*
• cpe:2.3:h:intel:atom_c:c2558:*:*:*:*:*:*:*
• cpe:2.3:h:intel:atom_c:c2718:*:*:*:*:*:*:*
• cpe:2.3:h:intel:atom_c:c2730:*:*:*:*:*:*:*
• cpe:2.3:h:intel:atom_c:c2738:*:*:*:*:*:*:*
• cpe:2.3:h:intel:atom_c:c2750:*:*:*:*:*:*:*
• cpe:2.3:h:intel:atom_c:c2758:*:*:*:*:*:*:*
• cpe:2.3:h:intel:atom_c:c3308:*:*:*:*:*:*:*
• cpe:2.3:h:intel:atom_c:c3338:*:*:*:*:*:*:*
• cpe:2.3:h:intel:atom_c:c3508:*:*:*:*:*:*:*
• cpe:2.3:h:intel:atom_c:c3538:*:*:*:*:*:*:*
• cpe:2.3:h:intel:atom_c:c3558:*:*:*:*:*:*:*
• cpe:2.3:h:intel:atom_c:c3708:*:*:*:*:*:*:*
• cpe:2.3:h:intel:atom_c:c3750:*:*:*:*:*:*:*
• cpe:2.3:h:intel:atom_c:c3758:*:*:*:*:*:*:*
• cpe:2.3:h:intel:atom_c:c3808:*:*:*:*:*:*:*
• cpe:2.3:h:intel:atom_c:c3830:*:*:*:*:*:*:*
• cpe:2.3:h:intel:atom_c:c3850:*:*:*:*:*:*:*
• cpe:2.3:h:intel:atom_c:c3858:*:*:*:*:*:*:*
• cpe:2.3:h:intel:atom_c:c3950:*:*:*:*:*:*:*
• cpe:2.3:h:intel:atom_c:c3955:*:*:*:*:*:*:*
• cpe:2.3:h:intel:atom_c:c3958:*:*:*:*:*:*:*
• cpe:2.3:h:intel:atom_e:e3805:*:*:*:*:*:*:*
• cpe:2.3:h:intel:atom_e:e3815:*:*:*:*:*:*:*
• cpe:2.3:h:intel:atom_e:e3825:*:*:*:*:*:*:*
• cpe:2.3:h:intel:atom_e:e3826:*:*:*:*:*:*:*
• cpe:2.3:h:intel:atom_e:e3827:*:*:*:*:*:*:*
• cpe:2.3:h:intel:atom_e:e3845:*:*:*:*:*:*:*
• cpe:2.3:h:intel:atom_x3:c3130:*:*:*:*:*:*:*
• cpe:2.3:h:intel:atom_x3:c3200rk:*:*:*:*:*:*:*

More vulnerabilities in Intel Atom C

• CVE-2018-3652 — High (CVSS 7.6): Existing UEFI setting restrictions for DCI (Direct Connect Interface) in 5th and 6th generation Intel Xeon Processor E3…
• CVE-2018-3640 — Medium (CVSS 5.6): Systems with microprocessors utilizing speculative execution and that perform speculative reads of system registers may…
• CVE-2018-9056 — Medium (CVSS 5.6): Systems with microprocessors utilizing speculative execution may allow unauthorized disclosure of information to an…
• CVE-2017-5754 — Medium (CVSS 5.6): Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized…
• CVE-2017-5753 — Medium (CVSS 5.6): Systems with microprocessors utilizing speculative execution and branch prediction may allow unauthorized disclosure of…
• CVE-2017-5715 — Medium (CVSS 5.6): Systems with microprocessors utilizing speculative execution and indirect branch prediction may allow unauthorized…

All CVEs affecting Intel Atom C →