CVE-2015-7988

The handle_regservice_request function in mDNSResponder before 625.41.2 allows remote attackers to execute arbitrary code or cause a denial of service (NULL pointer dereference) via unspecified vectors.

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-2015-7988 is rated High Risk (69.7/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 2.60%). 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-2015-7988

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 2025-11-27 1.93% 2.60% +0.67%
2 2025-08-25 3.71% 1.93% -1.78%
3 2025-06-19 — 3.71% —

Full EPSS history (11 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-7988

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]
7.5 2.0 HIGH
AV:N/AC:L/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:L)
Exploitation conditions are straightforward and predictable.
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.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2015-7988

Affected software / configurations for CVE-2015-7988

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-2015-7988

cvelogic Threat Intelligence