What is the CVSS score of CVE-2015-5986?

CVE-2015-5986 has a CVSS 2.0 base score of 7.1 (High). CVSS vector: AV:N/AC:M/Au:N/C:N/I:N/A:C. EPSS exploitation probability: 48.0%.

Bind CVE-2015-5986

HIGH

Improper Input Validation (CWE-20)

2015-09-05 cve@mitre.org

Denial Of Service Apple Bind Mac Os X Server Isc

7.1

CVSS 2.0 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-20 OWASP Top 10:2025 A05:2025 - Injection ASVS 5.0 V2 - Validation and Business Logic Input validation, allowlisting
Impact	CVSS score of 7.1 (HIGH). Attack characteristics: network attack vector, M complexity. EPSS exploitation probability: 47.99%.
Exploit ScenarioDerived	This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the high-severity affected system.

Act Now Prioritize within 24-48h. Why: HIGH severity + EPSS > 10%.

No patch listed yet 48.0% exploitation probability (EPSS)

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AnalysisAI

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. Rated high severity (CVSS 7.1), this vulnerability is remotely exploitable. Epss exploitation probability 48.0% and no vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

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Technical ContextAI · show details

This vulnerability is classified under CWE-20. 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. Affected products include: Isc Bind, Apple Mac Os X Server. Version information: before 9.9.7.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 7.1 HIGH

AV:N/AC:M/Au:N/C:N/I:N/A:C

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Confidentiality

None

Integrity

None

Availability

DescriptionCVE.org

Threat Intelligence Overview

EPSS Score

48.0%

Top 2% exploitable

Data Quality

3 sources

Confidence: Low

NVD

CVE.org

EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC No

EPSS 48.0%

Patch available No

Active threat No

Deciding rule

HIGH severity + EPSS > 10%

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

None

System Exposure· derived

Open

Automatable· derived

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +48

CVSS: +36

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Denial of Service MEDIUM

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

Affected Products (CPE)CVE.org

cpe:2.3:a:isc:bind:*:p2:*:*:*:*:*:*

cpe:2.3:a:isc:bind:*:p3:*:*:*:*:*:*

cpe:2.3:o:apple:mac_os_x_server:5.0.15:*:*:*:*:*:*:*

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References

Advisories & patches

ADVISORY https://kb.isc.org/article/AA-01291 REF http://lists.apple.com/archives/security-announce/2015/Oct/msg00009.html REF http://lists.fedoraproject.org/pipermail/package-announce/2015-September/165810.html REF http://lists.fedoraproject.org/pipermail/package-announce/2015-September/167465.html REF http://www.securityfocus.com/bid/76618 REF http://www.securitytracker.com/id/1033453 REF https://kb.isc.org/article/AA-01305 REF https://kb.isc.org/article/AA-01306 REF https://kb.isc.org/article/AA-01307 REF https://kb.isc.org/article/AA-01438 REF https://kc.mcafee.com/corporate/index?page=content&id=SB10134 REF https://security.gentoo.org/glsa/201510-01 REF https://security.netapp.com/advisory/ntap-20190730-0001/ REF https://support.apple.com/HT205376

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