High 8.8Published May 23, 2017

CVE-2016-9842The inflateMark function in inflate.c in zlib 1.2.8 might allow context-dependent attackers to have unspecified impact via vectors involving left shifts of negative integers.

Updated under an hour ago (Nov 2, 2026, 12:10 AM ET)

Does this affect you?

It affects zlib and 18 other products. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stackFree account, 3 products Every CVE for zlib Exploited in the last 30 days

The inflateMark function in inflate.c in zlib 1.2.8 might allow context-dependent attackers to have unspecified impact via vectors involving left shifts of negative integers.

CVSS: 8.8 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-1335
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Not given
NVD analysis: Modified
Record last updated: Jul 14, 2026
First seen by InfoSec Signals: Nov 1, 2026

Affected products

Affected products

zlib zlib zlib:zlib	from 1.2.3.4 before 1.2.9	NVD
opensuse leap opensuse:leap	42.1; 42.2	NVD
opensuse opensuse opensuse:opensuse	13.2	NVD
debian debian_linux debian:debian_linux	8.0	NVD
canonical ubuntu_linux canonical:ubuntu_linux	16.04; 18.04	NVD
oracle database_server oracle:database_server	18c	NVD
oracle jdk oracle:jdk	1.6.0; 1.7.0; 1.8.0	NVD
oracle jre oracle:jre	1.6.0; 1.7.0; 1.8.0	NVD
oracle mysql oracle:mysql	from 5.5.0 through 5.5.61; from 5.6.0 through 5.6.41; from 5.7.0 through 5.7.23; from 8.0.0 through 8.0.12	NVD
redhat satellite redhat:satellite	5.8	NVD
1–10 of 19

References

References

http://lists.opensuse.org/opensuse-updates/2016-12/msg00127.html	broken-link
http://lists.opensuse.org/opensuse-updates/2017-01/msg00050.html	broken-link
http://lists.opensuse.org/opensuse-updates/2017-01/msg00053.html	broken-link
http://www.openwall.com/lists/oss-security/2016/12/05/21	mailing-list, patch
http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html	third-party-advisory
http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html	third-party-advisory
http://www.securityfocus.com/bid/95131	broken-link, third-party-advisory, vdb-entry
http://www.securitytracker.com/id/1039427	broken-link, third-party-advisory, vdb-entry
https://access.redhat.com/errata/RHSA-2017:1220	third-party-advisory
https://access.redhat.com/errata/RHSA-2017:1221	third-party-advisory
1–10 of 25

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.