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Fencer Vulns
critical 9.8

CVE-2016-9841 in the critical feed json

inffast.c in zlib 1.2.8 might allow context-dependent attackers to have unspecified impact by leveraging improper pointer arithmetic.

published 2017-05-23 9 y ago modified 2026-10-08 31 d ago also EUVD-2016-10641

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
7.5%
EPSS 7.5% chance of exploitation in 30 days, percentile 94%
public exploits
0
none known

Summary

inffast.c in zlib 1.2.8 might allow context-dependent attackers to have unspecified impact by leveraging improper pointer arithmetic.

Patch / fix

  • Siemens CADRA V2511
  • zlib Debian 14, Debian 13, Debian 12 1:1.2.8.dfsg-4
  • rsync Debian 14, Debian 13, Debian 12 3.1.3-6

debian advisories DEBIAN-CVE-2016-9841

  • zlib Ubuntu 16.04 LTS 1:1.2.8.dfsg-2ubuntu4.3
  • klibc Ubuntu 20.04 LTS 2.0.7-1ubuntu5.2
  • klibc Ubuntu 22.04 LTS 2.0.10-4ubuntu0.1
  • klibc Ubuntu 24.04 LTS 2.0.13-4ubuntu0.1
  • klibc Ubuntu 25.10 2.0.13-4ubuntu1
  • rsync Ubuntu 16.04 LTS 3.1.1-3ubuntu1.3
  • rsync Ubuntu 18.04 LTS 3.1.2-2.1ubuntu1.1
  • rsync Ubuntu 20.04 LTS 3.1.3-6

ubuntu advisories UBUNTU-CVE-2016-9841

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • java-1.8.0-ibm network satellite 5.8 1:1.8.0.5.5-1jpp.1.el6_9
  • java-1.6.0-sun RHEL 6 EXTRAS_ORACLE_JAVA 1:1.6.0.171-1jpp.4.el6
  • java-1.6.0-sun RHEL 7 EXTRAS_ORACLE_JAVA 1:1.6.0.171-1jpp.4.el7
  • java-1.6.0-sun-src RHEL 6 EXTRAS_ORACLE_JAVA 1:1.6.0.171-1jpp.4.el6
  • java-1.6.0-sun-src RHEL 7 EXTRAS_ORACLE_JAVA 1:1.6.0.171-1jpp.4.el7
  • java-1.6.0-sun-demo RHEL 6 EXTRAS_ORACLE_JAVA 1:1.6.0.171-1jpp.4.el6
  • java-1.6.0-sun-demo RHEL 7 EXTRAS_ORACLE_JAVA 1:1.6.0.171-1jpp.4.el7
  • java-1.6.0-sun-jdbc RHEL 6 EXTRAS_ORACLE_JAVA 1:1.6.0.171-1jpp.4.el6

red hat advisories RHSA-2017:3453RHSA-2017:3047RHSA-2017:3046RHSA-2017:2999RHSA-2017:1222RHSA-2017:1221

  • zlib Studio Onsite 1.3 1.2.7-0.135.3.1
  • java-1_7_0-ibm SLES 11 SP3-TERADATA, SLES 11 SP3-LTSS, SLE Point of Sale 11 SP3 1.7.0_sr10.15-65.8.1
  • java-1_7_0-openjdk SLES for SAP 12 SP3, SLES for SAP 12 SP2, SLES for SAP 12 SP1 +9 more 1.7.0.161-43.7.6
  • java-1_7_1-ibm SLES for SAP 12 SP3, SLES for SAP 12 SP2, SLES for SAP 12 SP1 +7 more 1.7.1_sr4.15-38.8.1
  • java-1_7_1-ibm SLES for SAP 11 SP4, SLES 11 SP4, SLE Software Development Kit 11 SP4 1.7.1_sr4.15-26.8.1
  • java-1_8_0-ibm SLES for SAP 12 SP3, SLES for SAP 12 SP2, SLES for SAP 12 SP1 +6 more 1.8.0_sr5.5-30.13.1
  • java-1_6_0-ibm SLES 11 SP3-TERADATA, SLES 11 SP3-LTSS, SLE Point of Sale 11 SP3 1.6.0_sr16.50-85.5.1
  • java-1_6_0-ibm SLE Module for Legacy 12 1.6.0_sr16.50-50.3.1

suse advisories SUSE-SU-2018:1815-1SUSE-SU-2018:0061-1SUSE-SU-2018:0005-1SUSE-SU-2017:3455-1SUSE-SU-2017:3440-1SUSE-SU-2017:3411-1

  • perl Alpine 3.6, Alpine 3.5 5.24.3-r1
  • zlib Alpine 3.5, Alpine 3.4, Alpine 3.3 1.2.11-r0

alpine advisories ALPINE-CVE-2016-9841

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • fltk Azure Linux 3.0 1.3.8-1

azure linux advisories AZL-44316

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2016-9841 updated cvss 9.8

zlib: Out-of-bounds pointer arithmetic in inffast.c

  • Red Hat Oracle Java for Red Hat Enterprise Linux Client (v. 7) java-1.6.0-sun 1.6.0.171-1jpp.4.el7, java-1.7.0-oracle 1.7.0.161-1jpp.4.el7, java-1.8.0-oracle 1.8.0.151-1jpp.5.el7, java-1.6.0-sun-src 1.6.0.171-1jpp.4.el7, java-1.6.0-sun-demo 1.6.0.171-1jpp.4.el7, java-1.6.0-sun-jdbc 1.6.0.171-1jpp.4.el7, +9 more Red Hat Oracle Java for Red Hat Enterprise Linux Compute Node (v. 7) java-1.6.0-sun 1.6.0.171-1jpp.4.el7, java-1.7.0-oracle 1.7.0.161-1jpp.4.el7, java-1.8.0-oracle 1.8.0.151-1jpp.5.el7, java-1.6.0-sun-src 1.6.0.171-1jpp.4.el7, java-1.6.0-sun-demo 1.6.0.171-1jpp.4.el7, java-1.6.0-sun-jdbc 1.6.0.171-1jpp.4.el7, +5 more Red Hat Oracle Java for Red Hat Enterprise Linux Desktop 6 java-1.6.0-sun 1.6.0.171-1jpp.4.el6, java-1.7.0-oracle 1.7.0.161-1jpp.3.el6, java-1.8.0-oracle 1.8.0.151-1jpp.1.el6, java-1.6.0-sun-src 1.6.0.171-1jpp.4.el6, java-1.6.0-sun-demo 1.6.0.171-1jpp.4.el6, java-1.6.0-sun-jdbc 1.6.0.171-1jpp.4.el6, +9 more Red Hat Oracle Java for Red Hat Enterprise Linux HPC Node 6 java-1.6.0-sun 1.6.0.171-1jpp.4.el6, java-1.7.0-oracle 1.7.0.161-1jpp.3.el6, java-1.8.0-oracle 1.8.0.151-1jpp.1.el6, java-1.6.0-sun-src 1.6.0.171-1jpp.4.el6, java-1.6.0-sun-demo 1.6.0.171-1jpp.4.el6, java-1.6.0-sun-jdbc 1.6.0.171-1jpp.4.el6, +9 more Red Hat Oracle Java for Red Hat Enterprise Linux Server (v. 7) java-1.6.0-sun 1.6.0.171-1jpp.4.el7, java-1.7.0-oracle 1.7.0.161-1jpp.4.el7, java-1.8.0-oracle 1.8.0.151-1jpp.5.el7, java-1.6.0-sun-src 1.6.0.171-1jpp.4.el7, java-1.6.0-sun-demo 1.6.0.171-1jpp.4.el7, java-1.6.0-sun-jdbc 1.6.0.171-1jpp.4.el7, +9 more Red Hat Oracle Java for Red Hat Enterprise Linux Server 6 java-1.6.0-sun 1.6.0.171-1jpp.4.el6, java-1.7.0-oracle 1.7.0.161-1jpp.3.el6, java-1.8.0-oracle 1.8.0.151-1jpp.1.el6, java-1.6.0-sun-src 1.6.0.171-1jpp.4.el6, java-1.6.0-sun-demo 1.6.0.171-1jpp.4.el6, java-1.6.0-sun-jdbc 1.6.0.171-1jpp.4.el6, +9 more
    +2 more products
    Red Hat Oracle Java for Red Hat Enterprise Linux Workstation (v. 7) java-1.6.0-sun 1.6.0.171-1jpp.4.el7, java-1.7.0-oracle 1.7.0.161-1jpp.4.el7, java-1.8.0-oracle 1.8.0.151-1jpp.5.el7, java-1.6.0-sun-src 1.6.0.171-1jpp.4.el7, java-1.6.0-sun-demo 1.6.0.171-1jpp.4.el7, java-1.6.0-sun-jdbc 1.6.0.171-1jpp.4.el7, +9 more Red Hat Oracle Java for Red Hat Enterprise Linux Workstation 6 java-1.6.0-sun 1.6.0.171-1jpp.4.el6, java-1.7.0-oracle 1.7.0.161-1jpp.3.el6, java-1.8.0-oracle 1.8.0.151-1jpp.1.el6, java-1.6.0-sun-src 1.6.0.171-1jpp.4.el6, java-1.6.0-sun-demo 1.6.0.171-1jpp.4.el6, java-1.6.0-sun-jdbc 1.6.0.171-1jpp.4.el6, +9 more
    fixed: vendor fix RHSA-2017:3047
  • Red Hat Enterprise Linux Client Supplementary (v. 7) java-1.7.1-ibm 1.7.1.4.5-1jpp.1.el7_3, java-1.8.0-ibm 1.8.0.4.5-1jpp.1.el7_3, java-1.7.1-ibm-src 1.7.1.4.5-1jpp.1.el7_3, java-1.8.0-ibm-src 1.8.0.4.5-1jpp.1.el7_3, java-1.7.1-ibm-demo 1.7.1.4.5-1jpp.1.el7_3, java-1.7.1-ibm-jdbc 1.7.1.4.5-1jpp.1.el7_3, +4 more Red Hat Enterprise Linux ComputeNode Supplementary (v. 7) java-1.7.1-ibm 1.7.1.4.5-1jpp.1.el7_3, java-1.8.0-ibm 1.8.0.4.5-1jpp.1.el7_3, java-1.7.1-ibm-src 1.7.1.4.5-1jpp.1.el7_3, java-1.8.0-ibm-src 1.8.0.4.5-1jpp.1.el7_3, java-1.7.1-ibm-demo 1.7.1.4.5-1jpp.1.el7_3, java-1.8.0-ibm-demo 1.8.0.4.5-1jpp.1.el7_3
    fixed: vendor fix RHSA-2017:1221
  • Red Hat Enterprise Linux Desktop Supplementary (v. 6) java-1.7.1-ibm 1.7.1.4.5-1jpp.2.el6_9, java-1.8.0-ibm 1.8.0.4.5-1jpp.1.el6_9, java-1.6.0-ibm 1.6.0.16.45-1jpp.1.el6_9, java-1.7.1-ibm-src 1.7.1.4.5-1jpp.2.el6_9, java-1.8.0-ibm-src 1.8.0.4.5-1jpp.1.el6_9, java-1.7.1-ibm-demo 1.7.1.4.5-1jpp.2.el6_9, +10 more Red Hat Enterprise Linux HPC Node Supplementary (v. 6) java-1.7.1-ibm 1.7.1.4.5-1jpp.2.el6_9, java-1.8.0-ibm 1.8.0.4.5-1jpp.1.el6_9, java-1.6.0-ibm 1.6.0.16.45-1jpp.1.el6_9, java-1.7.1-ibm-src 1.7.1.4.5-1jpp.2.el6_9, java-1.8.0-ibm-src 1.8.0.4.5-1jpp.1.el6_9, java-1.7.1-ibm-demo 1.7.1.4.5-1jpp.2.el6_9, +4 more Red Hat Enterprise Linux Server Supplementary (v. 6) java-1.7.1-ibm 1.7.1.4.5-1jpp.2.el6_9, java-1.8.0-ibm 1.8.0.4.5-1jpp.1.el6_9, java-1.6.0-ibm 1.6.0.16.45-1jpp.1.el6_9, java-1.7.1-ibm-src 1.7.1.4.5-1jpp.2.el6_9, java-1.8.0-ibm-src 1.8.0.4.5-1jpp.1.el6_9, java-1.7.1-ibm-demo 1.7.1.4.5-1jpp.2.el6_9, +10 more
    fixed: vendor fix RHSA-2017:1222
  • Red Hat Enterprise Linux Server Supplementary (v. 7) java-1.7.1-ibm 1.7.1.4.5-1jpp.1.el7_3, java-1.8.0-ibm 1.8.0.4.5-1jpp.1.el7_3, java-1.7.1-ibm-src 1.7.1.4.5-1jpp.1.el7_3, java-1.8.0-ibm-src 1.8.0.4.5-1jpp.1.el7_3, java-1.7.1-ibm-demo 1.7.1.4.5-1jpp.1.el7_3, java-1.7.1-ibm-jdbc 1.7.1.4.5-1jpp.1.el7_3, +4 more
    fixed: vendor fix RHSA-2017:1221
  • Red Hat Enterprise Linux Workstation Supplementary (v. 6) java-1.7.1-ibm 1.7.1.4.5-1jpp.2.el6_9, java-1.8.0-ibm 1.8.0.4.5-1jpp.1.el6_9, java-1.6.0-ibm 1.6.0.16.45-1jpp.1.el6_9, java-1.7.1-ibm-src 1.7.1.4.5-1jpp.2.el6_9, java-1.8.0-ibm-src 1.8.0.4.5-1jpp.1.el6_9, java-1.7.1-ibm-demo 1.7.1.4.5-1jpp.2.el6_9, +10 more
    fixed: vendor fix RHSA-2017:1222
  • Red Hat Enterprise Linux Workstation Supplementary (v. 7) java-1.7.1-ibm 1.7.1.4.5-1jpp.1.el7_3, java-1.8.0-ibm 1.8.0.4.5-1jpp.1.el7_3, java-1.7.1-ibm-src 1.7.1.4.5-1jpp.1.el7_3, java-1.8.0-ibm-src 1.8.0.4.5-1jpp.1.el7_3, java-1.7.1-ibm-demo 1.7.1.4.5-1jpp.1.el7_3, java-1.7.1-ibm-jdbc 1.7.1.4.5-1jpp.1.el7_3, +4 more
    fixed: vendor fix RHSA-2017:1221
  • Red Hat Satellite 5.8 (RHEL v.6) java-1.8.0-ibm 1.8.0.5.5-1jpp.1.el6_9 Red Hat Satellite 5.8 ELS (RHEL v.6) java-1.8.0-ibm 1.8.0.5.5-1jpp.1.el6_9
    fixed: vendor fix RHSA-2017:3453
  • Red Hat Enterprise Linux 5 zlib Red Hat Enterprise Linux 6 zlib, minizip Red Hat Enterprise Linux 7 zlib, minizip Red Hat JBoss Enterprise Application Platform 5 zlib Red Hat JBoss Enterprise Application Platform 6 zlib Red Hat JBoss Enterprise Web Server 1 zlib
    +2 more products
    Red Hat JBoss Enterprise Web Server 2 zlib Red Hat JBoss Enterprise Web Server 3 zlib
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

cisa ICSA-26-202-06 updated cvss 9.8

Siemens CADRA

  • Siemens CADRA < 2511
    affected: fixed in V2511

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

cisa ICSA-19-155-01 updated cvss 9.8

PHOENIX CONTACT PLCNext AXC F 2152

  • Phoenix Contact AXC F 2152 2404267 version 1.x, 1046568 (Starterkit) version 1.x
    affected: vendor fix, mitigation “Phoenix Contact recommends affected users update to firmware release 2019.0 LTS or later, update to PLCNext Engineer release 2019.0 LTS or later, and apply the following specific mitigations below:” phoenixcontact.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
total
Assessed
31 d ago

Exploit prediction

7.55% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • Siemens CADRA

Classification

Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Updated Java versions.