How severe is CVE-2015-0565?

CVE-2015-0565 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2015-0565 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 14% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-0565?

CVE-2015-0565 affects Google Native Client. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-0565?

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

When was CVE-2015-0565 published?

CVE-2015-0565 was published on 2020-02-25 and last updated on 2026-06-17.

CVE-2015-0565

CVE-2015-0565 is a critical-severity vulnerability in Google Native Client with a CVSS 3.x base score of 10.0. Its EPSS exploit-prediction score of 14% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-119.

Key facts

Severity: Critical (CVSS 3.x base score 10.0)
CVSS v2: 10.0
EPSS exploit prediction: 14% (96th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Google Native Client
Published: 2020-02-25
Last modified: 2026-06-17

Description

NaCl in 2015 allowed the CLFLUSH instruction, making rowhammer attacks possible.

Frequently asked questions

What is CVE-2015-0565?: NaCl in 2015 allowed the CLFLUSH instruction, making rowhammer attacks possible.
How severe is CVE-2015-0565?: CVE-2015-0565 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2015-0565 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 14% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-0565?: CVE-2015-0565 affects Google Native Client. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-0565?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2015-0565 published?: CVE-2015-0565 was published on 2020-02-25 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:google:native_client:2015:*:*:*:*:*:*:*

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