CVE-2016-4538

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

6.23% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 93.0% 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:3.0/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

2016-05-22 01:00Z10 YR AGO

Last updated

2024-08-06 00:32Z2 YR AGO

Reserved

2016-05-05

Assigning CNA

debian

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-20Improper Input ValidationClass
• CWE-122Heap-based Buffer OverflowVariant

Data version

5.1

Document digest

bc7e6be1a195b2ae7477c65230087c14345f8b8452874d9785f4cd8c9d743987

• h20566.www2.hpe.comhttps://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05320149x_refsource_CONFIRM
• lists.opensuse.orgopenSUSE-SU-2016:1524http://lists.opensuse.org/opensuse-updates/2016-06/msg00027.htmlvendor-advisoryx_refsource_SUSE
• security.gentoo.orgGLSA-201611-22https://security.gentoo.org/glsa/201611-22vendor-advisoryx_refsource_GENTOO
• bugs.php.nethttps://bugs.php.net/bug.php?id=72093x_refsource_CONFIRM
• www.securityfocus.com90173http://www.securityfocus.com/bid/90173vdb-entryx_refsource_BID
• rhn.redhat.comRHSA-2016:2750http://rhn.redhat.com/errata/RHSA-2016-2750.htmlvendor-advisoryx_refsource_REDHAT
• www.openwall.com[oss-security] 20160505 CVE Request: PHP: several issues fixed with 7.0.6, 5.6.21 and 5.5.35http://www.openwall.com/lists/oss-security/2016/05/05/21mailing-listx_refsource_MLIST
• www.debian.orgDSA-3602http://www.debian.org/security/2016/dsa-3602vendor-advisoryx_refsource_DEBIAN
• git.php.nethttps://git.php.net/?p=php-src.git%3Ba=commit%3Bh=d650063a0457aec56364e4005a636dc6c401f9cdx_refsource_CONFIRM
• php.nethttp://php.net/ChangeLog-5.phpx_refsource_CONFIRM
• h20566.www2.hpe.comhttps://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05390722x_refsource_CONFIRM
• php.nethttp://php.net/ChangeLog-7.phpx_refsource_CONFIRM
• h20566.www2.hpe.comhttps://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05240731x_refsource_CONFIRM
• lists.opensuse.orgopenSUSE-SU-2016:1357http://lists.opensuse.org/opensuse-updates/2016-05/msg00086.htmlvendor-advisoryx_refsource_SUSE
• lists.fedoraproject.orgFEDORA-2016-f4e73663f4http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183736.htmlvendor-advisoryx_refsource_FEDORA