CVE-2018-3620

CVE-2018-3620 is a medium-severity vulnerability in Intel Core I3 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. The underlying weakness is classified as CWE-203.

Key facts

• Severity: Medium (CVSS 3.x base score 5.6)
• CVSS v2: 4.7
• EPSS exploit prediction: 6% (92nd 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 address translations may allow unauthorized disclosure of information residing in the L1 data cache to an attacker with local user access via a terminal page fault and a side-channel analysis.

Frequently asked questions

What is CVE-2018-3620?

Systems with microprocessors utilizing speculative execution and address translations may allow unauthorized disclosure of information residing in the L1 data cache to an attacker with local user access via a terminal page fault and a side-channel analysis.

How severe is CVE-2018-3620?

CVE-2018-3620 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-2018-3620 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-3620?

CVE-2018-3620 primarily affects Intel Core I3. In total, 463 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-3620?

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

When was CVE-2018-3620 published?

CVE-2018-3620 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
• http://www.vmware.com/security/advisories/VMSA-2018-0021.html
• http://xenbits.xen.org/xsa/advisory-273.html
• https://access.redhat.com/errata/RHSA-2018:2384
• https://access.redhat.com/errata/RHSA-2018:2387
• https://access.redhat.com/errata/RHSA-2018:2388
• https://access.redhat.com/errata/RHSA-2018:2389
• https://access.redhat.com/errata/RHSA-2018:2390
• https://access.redhat.com/errata/RHSA-2018:2391
• https://access.redhat.com/errata/RHSA-2018:2392
• https://access.redhat.com/errata/RHSA-2018:2393
• https://access.redhat.com/errata/RHSA-2018:2394
• https://access.redhat.com/errata/RHSA-2018:2395
• https://access.redhat.com/errata/RHSA-2018:2396
• https://access.redhat.com/errata/RHSA-2018:2402
• https://access.redhat.com/errata/RHSA-2018:2403
• https://access.redhat.com/errata/RHSA-2018:2404
• https://access.redhat.com/errata/RHSA-2018:2602
• https://access.redhat.com/errata/RHSA-2018:2603
• https://cert-portal.siemens.com/productcert/pdf/ssa-254686.pdf
• https://cert-portal.siemens.com/productcert/pdf/ssa-608355.pdf
• https://foreshadowattack.eu/
• https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0
• https://lists.debian.org/debian-lts-announce/2018/08/msg00029.html
• https://lists.debian.org/debian-lts-announce/2018/09/msg00017.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V4UWGORQWCENCIF2BHWUEF2ODBV75QS2/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XRFKQWYV2H4BV75CUNGCGE5TNVQCLBGZ/

Affected products (463)

• cpe:2.3:h:intel:core_i3:330e:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:330m:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:330um:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:350m:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:370m:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:380m:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:380um:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:390m:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:530:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:540:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:550:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:560:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:2100:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:2100t:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:2102:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:2105:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:2115c:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:2120:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:2120t:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:2125:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:2130:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:2310e:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:2310m:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:2312m:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:2328m:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:2330e:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:2330m:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:2340ue:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:2348m:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:2350m:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:2357m:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:2365m:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:2367m:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:2370m:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:2375m:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:2377m:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:3110m:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:3115c:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:3120m:*:*:*:*:*:*:*
• cpe:2.3:h:intel:core_i3:3120me:*:*:*:*:*:*:*

More vulnerabilities in Intel Core I3

• CVE-2018-12169 — High (CVSS 7.6): Platform sample code firmware in 4th Generation Intel Core Processor, 5th Generation Intel Core Processor, 6th…
• CVE-2018-3615 — High (CVSS 7.3): Systems with microprocessors utilizing speculative execution and Intel software guard extensions (Intel SGX) may allow…
• CVE-2017-5704 — Medium (CVSS 6.7): Platform sample code firmware included with 4th Gen Intel Core Processor, 5th Gen Intel Core Processor, 6th Gen Intel…
• CVE-2018-3646 — 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…

All CVEs affecting Intel Core I3 →

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• CVE-2025-27667 — Critical (CVSS 9.8): Vasion Print (formerly PrinterLogic) before Virtual Appliance Host 22.0.843 Application 20.0.1923 allows Administrative…
• CVE-2024-25714 — Critical (CVSS 9.8): In Rhonabwy through 1.1.13, HMAC signature verification uses a strcmp function that is vulnerable to side-channel…
• CVE-2024-25191 — Critical (CVSS 9.8): php-jwt 1.0.0 uses strcmp (which is not constant time) to verify authentication, which makes it easier to bypass…
• CVE-2024-25190 — Critical (CVSS 9.8): l8w8jwt 2.2.1 uses memcmp (which is not constant time) to verify authentication, which makes it easier to bypass…

Browse all CWE-203 (Observable Discrepancy) vulnerabilities →