How severe is CVE-2017-5926?

CVE-2017-5926 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2017-5926 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-5926?

CVE-2017-5926 primarily affects Allwinner A64. In total, 20 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-5926?

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-2017-5926 published?

CVE-2017-5926 was published on 2017-02-27 and last updated on 2026-06-17.

CVE-2017-5926

CVE-2017-5926 is a high-severity vulnerability in Allwinner A64 with a CVSS 3.x base score of 7.5. 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: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Allwinner A64
Published: 2017-02-27
Last modified: 2026-06-17

Description

Page table walks conducted by the MMU during virtual to physical address translation leave a trace in the last level cache of modern AMD processors. By performing a side-channel attack on the MMU operations, it is possible to leak data and code pointers from JavaScript, breaking ASLR.

Frequently asked questions

What is CVE-2017-5926?: Page table walks conducted by the MMU during virtual to physical address translation leave a trace in the last level cache of modern AMD processors. By performing a side-channel attack on the MMU operations, it is possible to leak data and code pointers from JavaScript, breaking ASLR.
How severe is CVE-2017-5926?: CVE-2017-5926 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2017-5926 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-5926?: CVE-2017-5926 primarily affects Allwinner A64. In total, 20 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-5926?: 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-2017-5926 published?: CVE-2017-5926 was published on 2017-02-27 and last updated on 2026-06-17.

References

Affected products (20)

cpe:2.3:h:allwinner:a64:-:*:*:*:*:*:*:*
cpe:2.3:h:amd:athlon_ii_640_x4:-:*:*:*:*:*:*:*
cpe:2.3:h:amd:e-350:-:*:*:*:*:*:*:*
cpe:2.3:h:amd:fx-8120_8-core:-:*:*:*:*:*:*:*
cpe:2.3:h:amd:fx-8320_8-core:-:*:*:*:*:*:*:*
cpe:2.3:h:amd:fx-8350_8-core:-:*:*:*:*:*:*:*
cpe:2.3:h:amd:phenom_9550_4-core:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:atom_c2750:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:celeron_n2840:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:core_i5_m480:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:core_i7-2620qm:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:core_i7-3632qm:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:core_i7-4500u:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:core_i7-6700k:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:core_i7_920:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:xeon_e3-1240_v5:-:*:*:*:*:*:*:*
cpe:2.3:h:intel:xeon_e5-2658_v2:-:*:*:*:*:*:*:*
cpe:2.3:h:nvidia:tegra_k1_cd570m-a1:-:*:*:*:*:*:*:*
cpe:2.3:h:nvidia:tegra_k1_cd580m-a1:-:*:*:*:*:*:*:*
cpe:2.3:h:samsung:exynos_5800:-:*:*:*:*:*:*:*

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CVE-2017-5927 — High (CVSS 7.5): Page table walks conducted by the MMU during virtual to physical address translation leave a trace in the last level…
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