CVE-2018-3615

CVE-2018-3615 is a high-severity vulnerability in Intel Core I3 with a CVSS 3.x base score of 7.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-203.

Key facts

• Severity: High (CVSS 3.x base score 7.3)
• CVSS v2: 5.4
• EPSS exploit prediction: 6% (93rd percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-203
• Affected product: Intel Core I3
• Published: 2018-08-14
• Last modified: 2026-06-17

Description

Systems with microprocessors utilizing speculative execution and Intel software guard extensions (Intel SGX) may allow unauthorized disclosure of information residing in the L1 data cache from an enclave to an attacker with local user access via a side-channel analysis.

Frequently asked questions

What is CVE-2018-3615?

Systems with microprocessors utilizing speculative execution and Intel software guard extensions (Intel SGX) may allow unauthorized disclosure of information residing in the L1 data cache from an enclave to an attacker with local user access via a side-channel analysis.

How severe is CVE-2018-3615?

CVE-2018-3615 has a CVSS 3.x base score of 7.3, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.

Is CVE-2018-3615 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-3615?

CVE-2018-3615 primarily affects Intel Core I3. In total, 129 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-3615?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-3615 published?

CVE-2018-3615 was published on 2018-08-14 and last updated on 2026-06-17.

References

• http://support.lenovo.com/us/en/solutions/LEN-24163
• http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20180815-01-cpu-en
• http://www.securityfocus.com/bid/105080
• http://www.securitytracker.com/id/1041451
• https://cert-portal.siemens.com/productcert/pdf/ssa-254686.pdf
• https://cert-portal.siemens.com/productcert/pdf/ssa-608355.pdf
• https://foreshadowattack.eu/
• https://lists.debian.org/debian-lts-announce/2018/09/msg00017.html
• https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0008
• https://security.netapp.com/advisory/ntap-20180815-0001/
• https://software.intel.com/security-software-guidance/software-guidance/l1-terminal-fault
• https://support.f5.com/csp/article/K35558453
• https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03874en_us
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180814-cpusidechannel
• https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00161.html
• https://www.kb.cert.org/vuls/id/982149
• https://www.synology.com/support/security/Synology_SA_18_45

Affected products (129)

• cpe:2.3:h:intel:core_i3:6006u:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:6098p:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:6100:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:6100e:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:6100h:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:6100t:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:6100te:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:6100u:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:6102e:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:6157u:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:6167u:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:6300:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:6300t:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:6320:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i5:650:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i5:655k:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i5:660:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i5:661:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i5:670:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i5:680:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i5:6200u:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i5:6260u:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i5:6267u:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i5:6287u:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i5:6300hq:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i5:6300u:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i5:6350hq:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i5:6360u:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i5:6400:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i5:6400t:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i5:6402p:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i5:6440eq:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i5:6440hq:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i5:6442eq:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i5:6500:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i5:6500t:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i5:6500te:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i5:6585r:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i5:6600:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i5:6600k:*:*:*:*:*:*:*

More vulnerabilities in Intel Core I3

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• CVE-2018-3646 — Medium (CVSS 5.6): Systems with microprocessors utilizing speculative execution and address translations may allow unauthorized disclosure…
• CVE-2018-3620 — Medium (CVSS 5.6): Systems with microprocessors utilizing speculative execution and address translations may allow unauthorized disclosure…
• CVE-2018-3693 — Medium (CVSS 5.6): Systems with microprocessors utilizing speculative execution and branch prediction may allow unauthorized disclosure of…
• CVE-2018-3665 — Medium (CVSS 5.6): System software utilizing Lazy FP state restore technique on systems using Intel Core-based microprocessors may…

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Browse all CWE-203 (Observable Discrepancy) vulnerabilities →