CVE-2015-5986

openpgpkey_61.c in named in ISC BIND 9.9.7 before 9.9.7-P3 and 9.10.x before 9.10.2-P4 allows remote attackers to cause a denial of service (REQUIRE assertion failure and daemon exit) via a crafted DNS response.

Published: 2015-09-04 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2015-5986 is rated Moderate Risk (57.6/100): CVSS High severity, with high exploitation likelihood (EPSS 26.07%, 98th percentile). EPSS ranks this CVE among the most likely to be exploited in the near term. 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-2015-5986

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 47.99% 26.07% -21.92%
2 2025-09-10 47.84% 47.99% +0.15%
3 2025-06-19 — 47.84% —

Full EPSS history (13 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-5986

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.1 2.0 HIGH
AV:N/AC:M/Au:N/C:N/I:N/A:C 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:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:C)
Complete availability impact.
 8.6 6.9 [email protected]

Weakness enumeration for CVE-2015-5986

OS Trackers for CVE-2015-5986

vendor priority summary link
debian unimportant CVE-2015-5986 unimportant priority: Debian including 1 source packages (bind9), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2015-5986
gentoo normal CVE-2015-5986: 1 GLSA(s) (201510-01), 1 atom(s) (net-dns/bind); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2015-5986
redhat medium — https://access.redhat.com/security/cve/CVE-2015-5986
suse high — https://www.suse.com/security/cve/CVE-2015-5986/
ubuntu medium CVE-2015-5986 medium priority: Ubuntu including 1 source packages (bind9), 4 status rows across 4 suites (precise, trusty, upstream, vivid): not-affected 3, needs-triage 1. https://ubuntu.com/security/CVE-2015-5986

Affected software / configurations for CVE-2015-5986

Vendor Product Version Raw CPE
isc bind <= 9.9.7 cpe:2.3:a:isc:bind:*:p2:*:*:*:*:*:*
isc bind <= 9.10.2 cpe:2.3:a:isc:bind:*:p3:*:*:*:*:*:*
apple mac_os_x_server 5.0.15 cpe:2.3:o:apple:mac_os_x_server:5.0.15:*:*:*:*:*:*:*

References for CVE-2015-5986

cvelogic Threat Intelligence