How severe is CVE-2015-3027?

CVE-2015-3027 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2015-3027 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-3027?

CVE-2015-3027 affects Apple Xcode. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-3027?

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

When was CVE-2015-3027 published?

CVE-2015-3027 was published on 2015-04-10 and last updated on 2026-06-17.

CVE-2015-3027

CVE-2015-3027 is a medium-severity vulnerability in Apple Xcode with a CVSS 2.0 base score of 5.0. 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-264.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-264
Affected product: Apple Xcode
Published: 2015-04-10
Last modified: 2026-06-17

Description

Clang in LLVM, as used in Apple Xcode before 6.3, performs incorrect register allocation in a way that triggers stack storage for stack cookie pointers, which might allow context-dependent attackers to bypass a stack-guard protection mechanism via crafted input to an affected C program.

Frequently asked questions

What is CVE-2015-3027?: Clang in LLVM, as used in Apple Xcode before 6.3, performs incorrect register allocation in a way that triggers stack storage for stack cookie pointers, which might allow context-dependent attackers to bypass a stack-guard protection mechanism via crafted input to an affected C program.
How severe is CVE-2015-3027?: CVE-2015-3027 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2015-3027 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-3027?: CVE-2015-3027 affects Apple Xcode. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-3027?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-3027 published?: CVE-2015-3027 was published on 2015-04-10 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:apple:xcode:*:*:*:*:*:*:*:*

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