CVE-2016-2191

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

3.51% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 88.7% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

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

Red Hat severity

Moderate. 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

2016-04-13 16:00Z10 YR AGO

Last updated

2024-08-05 23:24Z2 YR AGO

Reserved

2016-01-29

Assigning CNA

redhat

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-119Improper Restriction of Operations within the Bounds of a Memory BufferClass
• CWE-787Out-of-bounds WriteBase

Data version

5.1

Document digest

660dba8b23d06fd6e94e75d091f5e9fcbfe0eceb2c7ef402cf755e28e9402e79

• sourceforge.nethttps://sourceforge.net/p/optipng/bugs/59/x_refsource_CONFIRM
• www.openwall.com[oss-security] 20160404 CVE-2016-2191: optipng: invalid writehttp://www.openwall.com/lists/oss-security/2016/04/04/2mailing-listx_refsource_MLIST
• lists.opensuse.orgopenSUSE-SU-2016:1082http://lists.opensuse.org/opensuse-updates/2016-04/msg00065.htmlvendor-advisoryx_refsource_SUSE
• www.debian.orgDSA-3546http://www.debian.org/security/2016/dsa-3546vendor-advisoryx_refsource_DEBIAN
• www.ubuntu.comUSN-2951-1http://www.ubuntu.com/usn/USN-2951-1vendor-advisoryx_refsource_UBUNTU
• lists.opensuse.orgopenSUSE-SU-2016:1078http://lists.opensuse.org/opensuse-updates/2016-04/msg00061.htmlvendor-advisoryx_refsource_SUSE
• www.securityfocus.com20160404 CVE-2016-2191: optipng: invalid writehttp://www.securityfocus.com/archive/1/537972/100/0/threadedmailing-listx_refsource_BUGTRAQ
• seclists.org20160404 CVE-2016-2191: optipng: invalid writehttp://seclists.org/fulldisclosure/2016/Apr/15mailing-listx_refsource_FULLDISC
• security.gentoo.orgGLSA-201608-01https://security.gentoo.org/glsa/201608-01vendor-advisoryx_refsource_GENTOO
• packetstormsecurity.comhttp://packetstormsecurity.com/files/136553/Optipng-Invalid-Write.htmlx_refsource_MISC