CVE-2016-4439

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

0.46% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 37.9% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.1/AV:L/AC:L/PR:H/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

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

2016-05-20 14:00Z10 YR AGO

Last updated

2024-08-06 00:32Z2 YR AGO

Reserved

2016-05-02

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-122Heap-based Buffer OverflowVariant

Data version

5.1

Document digest

fc17f65d735a3003de04ace6efc035cd8b43267447a120d69fedac2b47f55400

• www.ubuntu.comUSN-3047-1http://www.ubuntu.com/usn/USN-3047-1vendor-advisoryx_refsource_UBUNTU
• www.securityfocus.com90760http://www.securityfocus.com/bid/90760vdb-entryx_refsource_BID
• security.gentoo.orgGLSA-201609-01https://security.gentoo.org/glsa/201609-01vendor-advisoryx_refsource_GENTOO
• www.ubuntu.comUSN-3047-2http://www.ubuntu.com/usn/USN-3047-2vendor-advisoryx_refsource_UBUNTU
• lists.gnu.org[qemu-devel] 20160519 [PATCH 1/2] scsi: check command buffer length before write(CVE-2016-4439)https://lists.gnu.org/archive/html/qemu-devel/2016-05/msg03273.htmlmailing-listx_refsource_MLIST
• www.openwall.com[oss-security] 20160519 CVE-2016-4439 Qemu: scsi: esp: OOB write while writing to 's->cmdbuf' in esp_reg_writehttp://www.openwall.com/lists/oss-security/2016/05/19/3mailing-listx_refsource_MLIST
• lists.debian.org[debian-lts-announce] 20181130 [SECURITY] [DLA 1599-1] qemu security updatehttps://lists.debian.org/debian-lts-announce/2018/11/msg00038.htmlmailing-listx_refsource_MLIST
• bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1337502x_refsource_CONFIRM