How severe is CVE-2015-7987?

CVE-2015-7987 has a CVSS 3.x base score of 9.8, 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-2015-7987 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-7987?

CVE-2015-7987 primarily affects Apple Mdnsresponder. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-7987?

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-2015-7987 published?

CVE-2015-7987 was published on 2016-06-26 and last updated on 2026-06-17.

CVE-2015-7987

CVE-2015-7987 is a critical-severity vulnerability in Apple Mdnsresponder with a CVSS 3.x base score of 9.8. 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-119.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 6.8
EPSS exploit prediction: 3% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Apple Mdnsresponder
Published: 2016-06-26
Last modified: 2026-06-17

Description

Multiple buffer overflows in mDNSResponder before 625.41.2 allow remote attackers to read or write to out-of-bounds memory locations via vectors involving the (1) GetValueForIPv4Addr, (2) GetValueForMACAddr, (3) rfc3110_import, or (4) CopyNSEC3ResourceRecord function.

Frequently asked questions

What is CVE-2015-7987?: Multiple buffer overflows in mDNSResponder before 625.41.2 allow remote attackers to read or write to out-of-bounds memory locations via vectors involving the (1) GetValueForIPv4Addr, (2) GetValueForMACAddr, (3) rfc3110_import, or (4) CopyNSEC3ResourceRecord function.
How severe is CVE-2015-7987?: CVE-2015-7987 has a CVSS 3.x base score of 9.8, 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-2015-7987 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-7987?: CVE-2015-7987 primarily affects Apple Mdnsresponder. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-7987?: 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-2015-7987 published?: CVE-2015-7987 was published on 2016-06-26 and last updated on 2026-06-17.

References

Affected products (5)

cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:airport_base_station_firmware:*:*:*:*:*:*:*:*
cpe:2.3:a:apple:mdnsresponder:*:*:*:*:*:*:*:*

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