How severe is CVE-2018-9056?

CVE-2018-9056 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-2018-9056 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-9056?

CVE-2018-9056 primarily affects Intel Atom C. In total, 1065 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-9056?

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

When was CVE-2018-9056 published?

CVE-2018-9056 was published on 2018-03-27 and last updated on 2026-06-17.

CVE-2018-9056

CVE-2018-9056 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. The underlying weakness is classified as CWE-200.

Key facts

Severity: Medium (CVSS 3.x base score 5.6)
CVSS v2: 4.7
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Intel Atom C
Published: 2018-03-27
Last modified: 2026-06-17

Description

Systems with microprocessors utilizing speculative execution may allow unauthorized disclosure of information to an attacker with local user access via a side-channel attack on the directional branch predictor, as demonstrated by a pattern history table (PHT), aka BranchScope.

Frequently asked questions

What is CVE-2018-9056?: Systems with microprocessors utilizing speculative execution may allow unauthorized disclosure of information to an attacker with local user access via a side-channel attack on the directional branch predictor, as demonstrated by a pattern history table (PHT), aka BranchScope.
How severe is CVE-2018-9056?: CVE-2018-9056 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-2018-9056 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-9056?: CVE-2018-9056 primarily affects Intel Atom C. In total, 1065 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-9056?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2018-9056 published?: CVE-2018-9056 was published on 2018-03-27 and last updated on 2026-06-17.

References

Affected products (1065)

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-2018-3693 — Medium (CVSS 5.6): Systems with microprocessors utilizing speculative execution and branch prediction may allow unauthorized disclosure of…
CVE-2018-3640 — Medium (CVSS 5.6): Systems with microprocessors utilizing speculative execution and that perform speculative reads of system registers may…
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 →

Other CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) vulnerabilities

CVE-2026-27604 — Critical (CVSS 10.0): FOSSBilling is a free, open-source billing and client management system. Starting in version 0.5.4 and prior to version…
CVE-2026-40965 — Critical (CVSS 10.0): Cloud Foundry UAA versions v76.12.0 through v78.12.0 are vulnerable to a private key exposure. The server contains a…
CVE-2026-42826 — Critical (CVSS 10.0): Exposure of sensitive information to an unauthorized actor in Azure DevOps allows an unauthorized attacker to disclose…
CVE-2025-29270 — Critical (CVSS 10.0): Incorrect access control in the realtime.cgi endpoint of Deep Sea Electronics devices DSE855 v1.1.0 to v1.1.26 allows…
CVE-2025-61481 — Critical (CVSS 10.0): An issue in MikroTik RouterOS v.7.14.2 and SwOS v.2.18 exposes the WebFig management interface over cleartext HTTP by…
CVE-2025-53624 — Critical (CVSS 10.0): The Docusaurus gists plugin adds a page to your Docusaurus instance, displaying all public gists of a GitHub user.…

Browse all CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) vulnerabilities →