CVE-2016-9586

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

4.74% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 91.5% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

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

Red Hat severity

Low. Red Hat's rating for its own products, not a CVSS rating.

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

2018-04-23 18:00Z8 YR AGO

Last updated

2026-04-15 21:03Z6 MO AGO

Reserved

2016-11-23

Assigning CNA

redhat

Record state

PUBLISHED

Severity

Medium (CVSS 5.9)

CNA CVSS vector

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

Weaknesses

• CWE-122Heap-based Buffer OverflowVariant
• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferClass

Data version

5.2

Document digest

44968bb2490ac0b5812a0bd8e46eeca537ec250f002df4b598557e36654b4855

• access.redhat.comRHSA-2018:3558https://access.redhat.com/errata/RHSA-2018:3558vendor-advisoryx_refsource_REDHAT
• lists.debian.org[debian-lts-announce] 20181106 [SECURITY] [DLA 1568-1] curl security updatehttps://lists.debian.org/debian-lts-announce/2018/11/msg00005.htmlmailing-listx_refsource_MLIST
• curl.haxx.sehttps://curl.haxx.se/docs/adv_20161221A.htmlx_refsource_CONFIRM
• github.comhttps://github.com/curl/curl/commit/curl-7_51_0-162-g3ab3c16x_refsource_CONFIRM
• www.securitytracker.com1037515http://www.securitytracker.com/id/1037515vdb-entryx_refsource_SECTRACK
• www.oracle.comhttp://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.htmlx_refsource_CONFIRM
• www.securityfocus.com95019http://www.securityfocus.com/bid/95019vdb-entryx_refsource_BID
• bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-9586x_refsource_MISC
• security.gentoo.orgGLSA-201701-47https://security.gentoo.org/glsa/201701-47vendor-advisoryx_refsource_GENTOO
• lists.apache.org[bookkeeper-issues] 20210628 [GitHub] [bookkeeper] padma81 opened a new issue #2746: Security Vulnerabilities in CentOS 7 image, Upgrade image to CentOS 8https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3Emailing-listx_refsource_MLIST
• lists.apache.org[bookkeeper-issues] 20210629 [GitHub] [bookkeeper] padma81 opened a new issue #2746: Security Vulnerabilities in CentOS 7 image, Upgrade image to CentOS 8https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3Emailing-listx_refsource_MLIST