CVE-2016-8621

Exploitation

Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.

SSVC decision

• ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
• AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
• Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.

CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.

EPSS probability

4.82% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 91.7% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

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

2018-07-31 22:00Z8 YR AGO

Last updated

2026-04-16 13:33Z6 MO AGO

Reserved

2016-10-12

Assigning CNA

redhat

Record state

PUBLISHED

Severity

Medium (CVSS 5.3)

CNA CVSS vector

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

Weaknesses

• CWE-125Out-of-bounds ReadBase

Data version

5.2

Document digest

571f04749a1255205889a4b433d177d3bde6ad4db87c62eb58eaf477d8d08d47

• curl.haxx.sehttps://curl.haxx.se/docs/adv_20161102G.htmlx_refsource_CONFIRM
• access.redhat.comRHSA-2018:3558https://access.redhat.com/errata/RHSA-2018:3558vendor-advisoryx_refsource_REDHAT
• bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-8621x_refsource_CONFIRM
• www.tenable.comhttps://www.tenable.com/security/tns-2016-21x_refsource_CONFIRM
• www.securitytracker.com1037192http://www.securitytracker.com/id/1037192vdb-entryx_refsource_SECTRACK
• www.oracle.comhttp://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.htmlx_refsource_CONFIRM
• curl.haxx.sehttps://curl.haxx.se/CVE-2016-8621.patchx_refsource_CONFIRM
• access.redhat.comRHSA-2018:2486https://access.redhat.com/errata/RHSA-2018:2486vendor-advisoryx_refsource_REDHAT
• security.gentoo.orgGLSA-201701-47https://security.gentoo.org/glsa/201701-47vendor-advisoryx_refsource_GENTOO
• www.securityfocus.com94101http://www.securityfocus.com/bid/94101vdb-entryx_refsource_BID