CVE-2016-9843

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

5.76% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 92.9% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/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

2017-05-23 03:56Z9 YR AGO

Last updated

2024-08-06 02:59Z2 YR AGO

Reserved

2016-12-05

Assigning CNA

microfocus

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

No CWE assigned

Data version

5.1

Document digest

64803fd6bed45ef04f8a4f9cc7bfed013b9c7b224c58daff2f57c6b2545f8fab

• access.redhat.comRHSA-2017:1221https://access.redhat.com/errata/RHSA-2017:1221vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2017:1220https://access.redhat.com/errata/RHSA-2017:1220vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2017:3047https://access.redhat.com/errata/RHSA-2017:3047vendor-advisoryx_refsource_REDHAT
• www.openwall.com[oss-security] 20161205 Re: CVE Request: zlib security issues found during audithttp://www.openwall.com/lists/oss-security/2016/12/05/21mailing-listx_refsource_MLIST
• www.securityfocus.com95131http://www.securityfocus.com/bid/95131vdb-entryx_refsource_BID
• www.securitytracker.com1041888http://www.securitytracker.com/id/1041888vdb-entryx_refsource_SECTRACK
• access.redhat.comRHSA-2017:3046https://access.redhat.com/errata/RHSA-2017:3046vendor-advisoryx_refsource_REDHAT
• lists.opensuse.orgopenSUSE-SU-2017:0077http://lists.opensuse.org/opensuse-updates/2017-01/msg00050.htmlvendor-advisoryx_refsource_SUSE
• security.gentoo.orgGLSA-201701-56https://security.gentoo.org/glsa/201701-56vendor-advisoryx_refsource_GENTOO
• www.securitytracker.com1039427http://www.securitytracker.com/id/1039427vdb-entryx_refsource_SECTRACK
• access.redhat.comRHSA-2017:1222https://access.redhat.com/errata/RHSA-2017:1222vendor-advisoryx_refsource_REDHAT
• lists.opensuse.orgopenSUSE-SU-2017:0080http://lists.opensuse.org/opensuse-updates/2017-01/msg00053.htmlvendor-advisoryx_refsource_SUSE
• access.redhat.comRHSA-2017:3453https://access.redhat.com/errata/RHSA-2017:3453vendor-advisoryx_refsource_REDHAT
• lists.opensuse.orgopenSUSE-SU-2016:3202http://lists.opensuse.org/opensuse-updates/2016-12/msg00127.htmlvendor-advisoryx_refsource_SUSE
• access.redhat.comRHSA-2017:2999https://access.redhat.com/errata/RHSA-2017:2999vendor-advisoryx_refsource_REDHAT
• lists.debian.org[debian-lts-announce] 20190324 [SECURITY] [DLA 1725-1] rsync security updatehttps://lists.debian.org/debian-lts-announce/2019/03/msg00027.htmlmailing-listx_refsource_MLIST
• usn.ubuntu.comUSN-4246-1https://usn.ubuntu.com/4246-1/vendor-advisoryx_refsource_UBUNTU
• lists.debian.org[debian-lts-announce] 20200129 [SECURITY] [DLA 2085-1] zlib security updatehttps://lists.debian.org/debian-lts-announce/2020/01/msg00030.htmlmailing-listx_refsource_MLIST
• usn.ubuntu.comUSN-4292-1https://usn.ubuntu.com/4292-1/vendor-advisoryx_refsource_UBUNTU
• www.oracle.comhttp://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.htmlx_refsource_CONFIRM
• www.oracle.comhttp://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.htmlx_refsource_CONFIRM
• www.oracle.comhttps://www.oracle.com/security-alerts/cpujul2020.htmlx_refsource_MISC
• www.oracle.comhttp://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.htmlx_refsource_CONFIRM
• support.apple.comhttps://support.apple.com/HT208144x_refsource_CONFIRM
• wiki.mozilla.orghttps://wiki.mozilla.org/MOSS/Secure_Open_Source/Completed#zlibx_refsource_MISC
• support.apple.comhttps://support.apple.com/HT208113x_refsource_CONFIRM
• support.apple.comhttps://support.apple.com/HT208112x_refsource_CONFIRM
• support.apple.comhttps://support.apple.com/HT208115x_refsource_CONFIRM
• wiki.mozilla.orghttps://wiki.mozilla.org/images/0/09/Zlib-report.pdfx_refsource_MISC
• github.comhttps://github.com/madler/zlib/commit/d1d577490c15a0c6862473d7576352a9f18ef811x_refsource_CONFIRM
• bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1402351x_refsource_CONFIRM
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20181018-0002/x_refsource_CONFIRM
• security.gentoo.orgGLSA-202007-54https://security.gentoo.org/glsa/202007-54vendor-advisoryx_refsource_GENTOO