CVE-2016-6173

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

2.92% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 86.0% of scored records. A rank, not a probability.

NVD base score

7.5 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2017-02-09 15:00Z9 YR AGO

Last updated

2024-08-06 01:22Z2 YR AGO

Reserved

2016-07-06

Assigning CNA

redhat

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-399

Data version

5.1

Document digest

3efae87d2e6e16e30f5e3eea48a488dd811e0baecacb678019dec85a556dfa23

• open.nlnetlabs.nl[nsd-users] 20160809 NSD 4.1.11https://open.nlnetlabs.nl/pipermail/nsd-users/2016-August/002342.htmlmailing-listx_refsource_MLIST
• www.openwall.com[oss-security] 20160706 Malicious primary DNS servers can crash secondarieshttp://www.openwall.com/lists/oss-security/2016/07/06/3mailing-listx_refsource_MLIST
• www.securityfocus.com91678http://www.securityfocus.com/bid/91678vdb-entryx_refsource_BID
• www.nlnetlabs.nlhttps://www.nlnetlabs.nl/bugs-script/show_bug.cgi?id=790x_refsource_CONFIRM
• lists.dns-oarc.net[dns-operations] 20160704 DNS activities in Japanhttps://lists.dns-oarc.net/pipermail/dns-operations/2016-July/015058.htmlmailing-listx_refsource_MLIST
• www.openwall.com[oss-security] 20160706 Re: Malicious primary DNS servers can crash secondarieshttp://www.openwall.com/lists/oss-security/2016/07/06/4mailing-listx_refsource_MLIST
• www.nlnetlabs.nlhttp://www.nlnetlabs.nl/svn/nsd/tags/NSD_4_1_11_REL/doc/RELNOTESx_refsource_CONFIRM
• github.comhttps://github.com/sischkg/xfer-limit/blob/master/README.mdx_refsource_MISC