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.

Published: 2016-06-26 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2015-7987 is rated High Risk (67.6/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 2.51%). High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2015-7987

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 3.08% 2.51% -0.57%
2 2025-03-30 4.28% 3.08% -1.20%
3 2025-03-29 — 4.28% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-7987

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.0 CRITICAL
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
6.8 2.0 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:M)
Exploitation needs some favorable conditions, but not exceptional ones.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.6 6.4 [email protected]

Weakness enumeration for CVE-2015-7987

Affected software / configurations for CVE-2015-7987

Vendor Product Version Raw CPE
apple iphone_os >= 9.0, < 9.1 cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
apple mac_os_x >= 10.9, < 10.9.5 cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
apple mac_os_x >= 10.10.0, < 10.10.5 cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
apple mac_os_x >= 10.11.0, < 10.11.1 cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
apple watchos < 2.1 cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*
apple airport_base_station_firmware >= 7.6, < 7.6.7 cpe:2.3:o:apple:airport_base_station_firmware:*:*:*:*:*:*:*:*
apple airport_base_station_firmware >= 7.7, < 7.7.7 cpe:2.3:o:apple:airport_base_station_firmware:*:*:*:*:*:*:*:*
apple mdnsresponder < 625.41.2 cpe:2.3:a:apple:mdnsresponder:*:*:*:*:*:*:*:*

References for CVE-2015-7987

URL Tags
http://www.kb.cert.org/vuls/id/143335 Third Party Advisory US Government Resource
http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html Third Party Advisory
http://www.securityfocus.com/bid/91323 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1036181 Third Party Advisory VDB Entry
https://support.apple.com/HT206846 Vendor Advisory
cvelogic Threat Intelligence